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Stories for Students – Life Science

Sept. 23, 2002 Fall Is in the Air
Fall is officially here. Why do leaves change colors? How do poets describe autumn's splendid changes? Related Riverdeep activities: An Overview of Photosynthesis, Why Are Leaves Green?
Sept. 16, 2002 Genetics of Aging
What can the lowly housefly teach your students about the genetics of aging? Find out in this article for the classroom. Related Riverdeep activities: Genes and Dominance
Sept. 9, 2002 Along the Food Chain
It's a bug-eat-bug world. Learn more about the fragile importance of food chains in this article for the classroom. Related Riverdeep activities: Exploring Food Chains and Food Webs
Sept. 9, 2002 Life on Mars, Life on Earth
Can Mars support life? Mounting evidence suggests that it can — or could at some point in its history. And some of that evidence is being found here on Earth.
Sept. 2, 2002 West Nile's Deadly Advance
West Nile virus has marched across the United States. Is it a real threat? Let this comprehensive article written for the classroom guide your investigation. Related Riverdeep activities: Introducing a Virus, Data Displays, Exploring Bar Graphs, Snack-O-Gram
June 24, 2002 Holding Back the River
What happens when you put a dam in a river's way? We visit the Colorado River and Glen Canyon Dam to find out. Related Riverdeep activity: Exploring Populations
May 20, 2002 Jelly Jewels
They're almost too beautiful to be real, but some of the oceans' graceful jellies pack a powerful punch. Related Riverdeep activity: Human Circulatory System
May 13, 2002 Healing with Honey
It's sticky, gooey, and sugary, but scientists studying honey are finding that there's more to it than a sweet flavor. Related Riverdeep activity: Percentages
May 6, 2002 To Bee or Not to Bee
They've got a highly organized social scene and a busy working day. Meet nature's furry, striped pollinator, the bee. Related Riverdeep activity: Dominant and Recessive Traits
Mar. 25, 2002 Cow Power
Cow burps are fueling global warming. But it's not all bad news — methane from cows' manure could be used to generate electricity. This article is designed for teachers to use in the classroom.
Mar. 25, 2002 Spring Has Sprung!
There's more to Spring than mild weather, flowers, and songbirds. Related Riverdeep activities: The Role of Light in Photosynthesis, The Effect of Temperature
Mar. 11, 2002 Shamrocks for St. Patrick
The roots of this Irish holiday run deep. Related Riverdeep activities: Natural Mutations, Chemical Mutagens
Mar. 4, 2002 The Importance of Insects
This article is designed for teachers to use in the classroom. Without insects, life on Earth could not exist. We look at insects' eminent role in the ecosystem. Related Riverdeep activities: Exploring Food Chains and Food Webs, Population Growth Curve, Factors Affecting Population Growth, Carrying Capacity, Predator-Prey Relationships, Competition Between Two Species
Mar. 4, 2002 Critters on the Menu
For the people of some countries, grasshoppers and termites make for a tasty snack. Find out about scrumptious bugs with us!
Mar. 4, 2002 Bug Medicine
Leeches and maggots, healing treatments of yesteryear, make a comeback and find their way into modern medical science. Related Riverdeep activity: The Circulatory System
Feb. 4, 2002 When Animals Use Science
Animals employ scientific and engineering principles as they dig, burrow, and adapt to their environments. Related Riverdeep activity: Highly Damped Fall
Feb. 4, 2002 Changing the Blueprint
The heated debate over human cloning continues as the U.S. Senate tries to decide whether human cloning should be allowed for any reason. We look at the applications and ethics of cloning. Related Riverdeep activities: The Genetic Material, Genetic Engineering
Jan. 28, 2002 Nature at Close Range
How do brilliant writers describe the wonders of the natural world? Find out by looking at works by writers such as Herman Melville and Annie Dillard. Related Riverdeep activities: Predation
Jan. 21, 2002 What the Nose Knows
Fresh coffee, roses, hot dogs... how do our noses pick up so many different odors? Find out about all things olfactory — in the animal kingdom, too. Related Riverdeep activities: Graham's Law, Lenses and Vision
Jan. 21, 2002 Too Many Deer?
Hunting makes for a controversial method of reigning in prosperous deer populations. With this article, designed for use in the classroom, teachers can discuss animal population management — the science and ethics — with their students. Related Riverdeep activities: Population Growth Curves, Factors Affecting Population Growth, Carrying Capacity, Predator-Prey Relationships
Jan. 14, 2002 Smelly Repellents
The Department of Defense is developing odor bombs. Many members of the animal kingdom already know about how useful a bad smell can be. Find out about the science of bad odors (and find out whether or not tomato juice really does get rid of the skunk smell). Related Riverdeep activities: Graham's Law
Jan. 7, 2002 In Living Color
From feeling blue to seeing red, color pervades our lives. What gives colors their color? And how do colors affect us? Related Riverdeep activities: Dispersion of White Light, What Makes a Rainbow?, Why Are Leaves Green?
Jan. 7, 2002 Winter Light
Cultures around the world have found ways to compensate for the fact that there is less natural light in winter — from candles used in winter celebrations to laser light shows. This article includes a comprehensive set of resources for teachers. Related Riverdeep activities: The Role of Light in Photosynthesis, Emission Spectra and the Bohr Atom, Reflections in a Plane Mirror, Zap!, Light
Dec. 31, 2001 Get Some Sleep
Most adolescents don't get enough sleep. Do you? Missing out on sleep can cause unexpected problems. We look at how much sleep you need and how to catch up on missed sleep time.Related Riverdeep activities: Blood Pressure and Circulation, Converting Fractions to Percents
Dec. 17, 2001 Earth's Aliens
We still don't know of all the species that share our planet. How will we meet them? And what are they like? Related Riverdeep activities: Design an Animal, Percents
Dec. 10, 2001 Asteroid Watch
Is Earth in danger of colliding with asteroids? Astronomers now tell us the risk is not as great as we once thought. Teachers can look at the risks and the science involved with this article designed especially for the classroom. Related Riverdeep activities: Potential and Kinetic Energy, Collisions, Reflections in a Plane Mirror, The Role of Light in Photosynthesis, Exploring Food Chains and Food Webs, Amplitude, Wavelength, and Frequency of Waves
Dec. 3, 2001 Cloning Controversy
No two fingerprints are alike. Could recent developments in human cloning change that? Investigate with this Riverdeep article, written for teachers for use in the classroom. Related Riverdeep activities: Principles of Genetics, Genetic Engineering, Molecular Biology (DNA)
Nov. 26, 2001 Flu Season Is Coming
Flu season has arrived, and once again there is a shortage of vaccines. Related Riverdeep activities: Catching the Flu, Matrix Multiplication
Nov. 19, 2001 What's In a Name?
This article is designed for classroom use. Learn how organisms, compounds, and celestial bodies get their names according to strict rules. Related Riverdeep activities: Chemical Nomenclature Tool, Cations and Anions, Binary Ionic Compounds, Ternary Ionic Compounds, Binary Molecular Compounds, Acids and Bases
Nov. 12, 2001 Reefs in Danger
A recent study prompts the question: what dangers face the beautiful and vulnerable coral reefs of the world? Related Riverdeep activities: Photosynthesis and Light, Destination: Ocean
Nov. 5, 2001 Coming Ashore
Why do dolphins and whales come ashore? A marine veterinarian helps us investigate the phenomenon of stranding. Related Riverdeep activities: Exploring Direct Variation
Sept. 10, 2001 Emotional Dogs
Do dogs have an emotional life?
August 6 , 2001 Racing into Bicycling
Learn how bicycling can open up your world — and improve your health. Related Riverdeep activities: Fitness and the Heart, Controlling Blood Flow, Blood Pressure
July 30, 2001 Research Versus Animal Rightsvideo
Explore the debate over the use of animals in medical research and write a persuasive essay in response. Related Riverdeep activities: Write for Your Life Persuasive Essay
July 23, 2001 Visit the Wetlandsvideo
Take a virtual field trip to explore the wetlands and hear the debate over wetlands conservation. Related Riverdeep activities: Exploring Food Chains and Food Webs
July 16, 2001 The Price of AIDS
Learn how AIDS is going to effect our global future in many ways. Related Riverdeep activities: Essentials of Percents, Factors Affecting Population Growth, Introducing a Virus
June 18, 2001 Wildlife Detective Work
Learn how the children of Massachusetts are helping scientists classify all of the state's wildlife. Related Riverdeep activities: Carrying Capacity, Exploring Food Chains and Food Webs, Population Growth Curve, Factors Affecting Population Growth, Two Populations — What's the Difference?, Observing Population Growth, Modifying Population Growth, Effect of Food Supply, Competition between Two Species, Predator-Prey Relationships, An Overview of Photosynthesis
June 11, 2001 Global Population Trends
Flash forward 50 years. Will Earth be able to sustain the ever-growing human population? Related Riverdeep activities: Carrying Capacity, Exploring Food Chains and Food Webs, Population Growth Curve, Factors Affecting Population Growth, Two Populations — What's the Difference?, Observing Population Growth, Modifying Population Growth, Introducing a Virus, Effect of Food Supply, Historical Estimates of World Population, Determining Population Growth
May 28, 2001 Easy Giving
Making a difference has never been so easy thanks to some new charity Web sites. Related Riverdeep activities: Ordering and Rounding Whole Numbers, Exploring Food Chains and Food Webs
Apr 30, 2001 Our National Parks
An ongoing problem of air pollution spoils some of our most majestic landscapes.
Apr 26, 2001 Marrying Math and Art
A sculptor with a math Ph.D brings unusual dimensions to his art work. Related Riverdeep activities: Calculating the Volume and Surface Area of a Right Cylinder, Tessellating Regular Polygons
April 16, 2001 New Leads against Food Poisoning
The combination of two high-tech tools—DNA fingerprinting and a nationwide food poisoning network—enables health officials to locate the source of food poisoning. Related Riverdeep activity: DNA Fingerprinting
April 11, 2001 Environmental Friend or Foe?
Learn more about how some of Bush's policies may affect the environment.
Apr 10, 2001 Smart Food
As funny as it sounds, eating a nutritious lunch can change your life.
Mar 27, 2001 They Struggled to be Heard
Learn about the lives of three historical women through their poetry.
Mar 19, 2001 Covering Science audio
Science reporter David Baron has covered such topics as the eruption of volcanoes in Iceland and the Caribbean, the hole in Earth's ozone layer above Antarctica, and the quest to control the disease-carrying tsetse fly in Africa. Riverdeep activities: Exploring Food Chains and Food Webs, Two Competing Populations,
Mar 13, 2001 Fish Flee Farm
Environmentalists worry that the recent escape of 100,000 farm-raised salmon in Maine may endanger the state's wild salmon population. Related Riverdeep activities: Exploring Food Chains and Food Webs, Population Growth Curve, Factors Affecting Population Growth, Predator-Prey Relationships
Mar 5, 2001 Milestones in DNA Research
Your students can learn more about genetics and the history of genetic research leading up to the Human Genome project in this article for the classroom. Riverdeep activities: The Master Molecules, DNA and Replication, Genetic Engineering, Recombinant DNA, The Human Genome Database
Mar 2, 2001 Manatees or Humanity?
The gentle and endangered manatee has only one know enemy — human beings. Riverdeep activities: Predator-Prey Relationships, Two Competing Populations, Comptetition Between Two Species
Mar. 1, 2001 Corralling Mad Cow Disease
Explore whether the United States is at risk of a mad cow epidemic.
Feb. 21, 2001 The Science of Creativity
Changing your perspective can help unlock creative genius. Related Riverdeep activity: Fitness and the Heart
Feb. 20, 2001 The Wide World of Jane Goodall
Widely considered the world's leading expert on animal behavior, Jane Goodall has had a career that spans 40 years. Riverdeep activities: Two Competing Populations, Population Growth Curves, Exploring Food Chains and Food Webs
Feb. 19, 2001 The Battle for the Wetlands
A new report shows that destruction of America's wetlands is slowing down, but there is still room for concern.
Feb. 13, 2001 Paradise in Trouble: The Galápagos Islands
The Galápagos Islands support many unique species, making it a biologist's dream. Yet humans are making a negative impact on the ecosystem—from a recent oil spill to overfishing. Related Riverdeep activities: S and J Curves, Introducing a Virus, Effect of Food Supply
Feb. 8, 2001 Extinction of a Species
The red colobus monkey recently became extinct, an event that raises concerns for other primates around the world. Related Riverdeep activities: Exploring Food Chains and Food Webs, Carrying Capacity
Feb. 5, 2001

audio Taking a World View
Explorer Wade Davis combines anthropology and botany into a career that spans the globe. Related Riverdeep activities: Destination Rainforest, Sun and Shade Plants

Feb. 2, 2001 Scaring Crows
The Canadian city of Chatham freed itself from the grip of thousands of crows by importing the crow's natural enemies. Related Riverdeep activity: Predator-Prey Relationships
Feb. 1, 2001 Panda Preservation
The arrival of two giant pandas at the National Zoo has renewed attention on panda survival worldwide . Related Riverdeep activities: Exploring Food Chains and Food Webs, Factors Affecting Population Growth, Talking Walls
Jan. 9, 2001 Cross-Species Transplants
Scientists continue to debate using animal organs in humans. Related Riverdeep activities: Human Genome Update, Mapping DNA
Dec. 18, 2000 Journey to the Bottom of the Sea
audio videoOcean explorer Robert Ballard embarks on a new expedition to uncover the ancient secrets of the Black Sea.
Nov. 28, 2000 An Upstream Battle
The tearing down of dams across the country has provided salmon with a new lease on life. Related Riverdeep activity: Factors Affecting Population Growth
Nov. 27, 2000 Reducing Smog
Mexico City has made significant strides in reducing urban smog, showing that communities can work to make a difference in the quality of the air they breathe. Related Riverdeep activities: Inhalation and Exhalation, Gas Exchange, Health and the Respiratory System: Asthma, Health and the Respiratory System: Emphysema, Fueling Photosynthesis with Carbon Dioxide and Water
Nov. 13, 2000 Cool Off with Algae
Scientists propose that fertilizing the ocean with iron may cause more phytoplankton to grow, thereby counteracting global warming. Related Riverdeep activities: Limiting Factors I, Limiting Factors II, Fueling Photosynthesis with Carbon Dioxide and Water
Nov. 8, 2000 Lead Poisoning: From Beethoven to Ducks
A new study shows that Beethoven suffered from lead poisoning, which now also affects wildlife. Related Riverdeep activities: Functions of the Circulatory System, Periodic Table Tool
Nov. 3, 2000 A World within a World
The Biosphere 2 project is currently conducting research that examines the effects of increased levels of CO 2 . Related Riverdeep activity: Fueling Photosynthesis with Carbon Dioxide and Water. Related Riverdeep event: Going to Extremes
Oct. 18, 2000 The Dimensions of Dyslexia
There have been recent strides in understanding the problems and anatomy of the learning disability known as dyslexia.
Oct. 13, 2000 Preparing for the Flu
People of all ages can benefit from flu shots. Related Riverdeep activities: Asthma, Health and Diseases, Health and the Respiratory System: Emphysema
Oct. 9, 2000 Exporting "Surplus" Elephants
The elephants' changing habitats are making their survival more difficult. Related Riverdeep activities: Population Growth Curve, Carrying Capacity
Sept. 29, 2000 The Monarch Migration
Urban sprawl affects the monarch butterfly's winter habitats.
Sept. 27, 2000 Ghost Roads Haunt U.S. Forests
Roads illegally cut into forests around the country cause environmental problems. Related Riverdeep event: Into the Brazilian Rainforest
Sept. 18, 2000 The Year of the Wildfires
The wildland acres going up in flames across America endanger communities and ecosystems. Related Riverdeep activities: Energy Directions, Health and the Respiratory System: Asthma, Health and the Respiratory System: Emphysema, Graphing Ordered Pairs
Sept. 14, 2000 Life without Trees
Increasing development destroys nature's "vacuum cleaners." Related Riverdeep activities: What Is Photosynthesis?, An Overview of Photosynthesis
Sept. 8, 2000 By Leaps and Bounds
From birth through adolescence, the body grows remarkably. Related Riverdeep activity: Spurting Up
Aug. 18, 2000 Tracking the West Nile Virus
Following the footsteps of a mysterious illness leads to an unexpected—and serious—discovery. Related Riverdeep activity: Introducing a Virus
Aug. 10, 2000 Fighting Oil Pollution
Several surprising factors cause oil pollution in the world's oceans and seas. Related Riverdeep activity: Environmental Changes
Aug. 4, 2000 A Perilous Journey
The population of the world's largest reptile is declining, but there's some good news from the beaches of Trinidad. Related Riverdeep activities: Factors Affecting Population Growth, Population Growth Curve, Observing Population Growth
July 24, 2000 Everybody into the Water
Clean-up efforts return the Charles River in Massachusetts to a safe and clean boating and swimming haven. Related Riverdeep activity: Design an Ecosystem
July 19, 2000 On the Road to Machu Picchu
A 30-mile trek high in the Andes leads to an ancient Incan ceremonial city. Related Riverdeep activity: Acclimatization
July 11, 2000 Here Come the Elephants
Debate swirls around the circus ring as animal-rights activists call for changing the role of elephant as entertainer.
July 5, 2000 New Hope for Diabetics
Treatment for diabetes moves beyond insulin injections. Related Riverdeep activity: The Circulatory System and Health: The Effect of Exercise.
June 21, 2000 Achieving Athletic Excellence
Keeping student athletes focused and motivated challenges many coaches. Related Riverdeep activity: Fitness and the Heart
June 21, 2000 Motorboats vs. Manatees
Speed restrictions on motorboats may keep the endangered manatee population safe. Related Riverdeep activities: Momentum and Force, Collisions in One Dimension II
June 19, 2000 Starving Cancer
New cancer treatment shows promise in shrinking tumors. Related Riverdeep activity: Blood Supply
June 15, 2000 Where Have All the Sea Otters Gone?
Back from the brink of extinction, these creatures face new dangers. Related Riverdeep activities: Exploring Food Chains and Food Webs, Enter Predator, Factors Affecting Population Growth
June 9, 2000 Setting Wildland Fire Policy
Revised fire management strategies designed to protect the environment spark debate. Related Riverdeep activity: Energy Directions
June 8, 2000 The Future of Frog Dissection
Learning about a frog's anatomy now can take place online. Related Riverdeep activity: Heart Attack!
June 5, 2000 You Are What You Eat
A report warns teens about eating too much junk food and helps them calculate their body mass index. Related Riverdeep activities: Blood Pressure and Circulation, Heart Problems
May 25, 2000 Human Genome Update
Unlocking the secrets contained in human DNA helps in the treatment of disease. Related Riverdeep activities: Mapping DNA, From Protein to DNA, The Human Genome Database
May 24, 2000 Science through the Writer's Eye
Writer Rachel Carson and poet May Swenson observe scientific phenomena from differing perspectives. Related Riverdeep activity: Environmental Changes
May 15, 2000 Saving the Sequoias
These natural giants receive federal recognition and protection. Related Riverdeep activities: An Overview of Photosynthesis, The Role of Light in Photosynthesis
May 11, 2000 Manatees or Humanity?
These gentle sea mammals have no known enemies, except humans. Related Riverdeep activities: Competition between Two Species, Two Competing Populations
May 11, 2000 The Ivory Ban
Countries compromise on an international ban on the trading of ivory. Related Riverdeep activity: Carrying Capacity
May 9, 2000 Deep-Diving Dolphins
By observing dolphins on their deep-water dives, scientists are able to understand more about oxygen use. Related Riverdeep activities: Boyle's Law, Lung Capacity
May 8, 2000 Pushing the Panic Button
When fear takes control, it becomes a problem. Related Riverdeep activity: A Pressure Control Mechanism
May 3, 2000 Preventing Lyme Disease
A serious tick-borne illness infects animals and humans alike. Related Riverdeep activity: Cardiac Disorder
Apr. 28, 2000 Recycling in Action
Recycled material conserves our natural resources and energy. Related Riverdeep activity: The Cost of Electricity
Apr. 24, 2000 Orcas in Our Midst
Whales living in captivity face dangers, too.
Apr. 20, 2000 Going Solar
Harnessing the Sun's energy reduces our dependence on fossil fuels. Related Riverdeep activities: The Role of Light in Photosynthesis, Light & Photosynthesis
Apr. 19, 2000 Hold the Milk, Wheat, Eggs, and Soy
Certain foods cause allergic reactions in a percentage of the population. Related Riverdeep activities: The Mechanism of Breathing, Health and the Respiratory System: Asthma
Apr. 18, 2000 Ups and Downs for Grizzly Bears
A North American species faces threats from humans. Related Riverdeep activities: Food Chains and Food Webs, DNA Fingerprinting, Maintaining System Balance
Apr. 13, 2000 Pumped Up and Falling Flat
The EPA recommends banning methyl tertiary butyl ether, a widely-used gasoline additive. Related Riverdeep activity: Exploring Proper and Improper Fractions
Apr. 11, 2000 Cardiac News
Researchers identify a cause of unexpected heart attacks. Related Riverdeep activities: The Cardiovascular System and Health: Heart Disease, Blood Pressure and Circulation, The Cardiovascular System and Health: The Effect of Exercise
Mar. 29, 2000 Digging the Mastodon
Excavation in New York State unearths some prehistoric discoveries. Related Riverdeep activities: The Master Molecule, Predator-Prey Relationships, Competition Pressure
Mar. 22, 2000 MIAs Top Priority during Cohen's Vietnam Visit
The Secretary of Defense's historic visit attempts to resolve the cases of soldiers missing in action. Related Riverdeep activity: DNA Fingerprinting
Mar. 7, 2000 Warming the Food Web
Global warming disrupts hibernation and migration patterns. Related Riverdeep activities: Exploring Food Chains and Food Webs, Predator-Prey Relationships
Feb. 28, 2000 Saving a Part of Brazil
Developers and environmentalists compete for an Iowa-sized piece of Brazil. Related Riverdeep activities: Exploring Food Chains and Food Webs, Factors Affecting Population Growth, Competition between Two Species. Related Riverdeep event: Into the Brazilian Rainforest
Feb. 24, 2000 Peanuts: A Genuine Treasure
George Washington Carver's efforts unleash the power of the peanut.
Feb. 10, 2000 Supercomputer Sleuth: Tracking the Eve Virus
Scientists trace the origins of the virus that causes AIDS. Related Riverdeep activities: Mutant Music, Natural Mutations
Feb. 10, 2000 You Light Up My Life
Winter affects mood, appetite, and personality, but where there's light, there's hope. Related Riverdeep activity: The Role of Light in Photosynthesis
Feb. 7, 2000 The Art of Body Art
Artistic body painting follows ancient cultural and tribal customs.
Feb. 4, 2000 Infectious Diseases among Wildlife
Animals are infected by a growing number of microorganisms.
Jan. 26, 2000 Iguanas Fit Their Shrinking Food Supply
Marine reptiles on the Galapagos Islands adapt to changes in their food supply. Related Riverdeep activity: Eating Efficiently, Survival Strategies, Environmental Changes
Jan. 19, 2000 A Flu Season to Remember?
A serious flu outbreak hospitalizes hundreds of thousands. Related Riverdeep activities: The Human Respiratory System, First Look: Respiratory System, Health and Diseases
Jan. 18, 2000 A Winter Wonderland
Discover the cold facts behind winter in nature and literature. Related Riverdeep activities: The Role of Light in Photosynthesis, The Effect of Temperature
Jan. 12, 2000 Happy Anniversary, NOAA
Agencies of the National Oceanographic and Atmospheric Administration monitor weather, assess climate changes, and study the environment. Related Riverdeep activities: Fueling Photosynthesis with Carbon Dioxide and Water, Carbon Dioxide, Defining Mean & Median, Calculating the Mean, Median & Mode
Jan. 7, 2000 Dilemmas of the New Genetics
An active GRPR gene may increase the susceptibility to lung cancer. Related Riverdeep activities: Genetic Code, Genetic Engineering (introductory), Genetic Engineering (advanced), The Human Genome Database
Jan. 7, 2000 The World at Six Billion
Rising populations make their mark around the world. Related Riverdeep activity: Population Growth Curves
Jan. 6, 2000 Mapping Global Warming
Numerous environmental organizations publish a map indicating the "fingerprints" and "harbingers" of global warming.
Jan. 6, 2000 White Rhinos Rebound from Extinction
Rhinos face extinction in certain African countries, but in one South African game reserve, the population is on the rise. Related Riverdeep activities: Maintaining System Balance, Competition Pressure
Dec. 20, 1999 Importing Natural Enemies for Fire Ants
Introducing natural predators controls a menacing population of fire ants. Related Riverdeep activities: S and J Curves, Introducing a Virus, Effect of Food Supply
Nov. 17, 1999 Asthma in the Workplace
Occupational asthma, or asthma related to one's job, is on the rise. Related Riverdeep activities: Anatomy of the Respiratory System, The Mechanism of Breathing, Basic Anatomy and Function, Breathing, Health and the Respiratory System: Asthma, Health and Diseases
Sept. 22, 1999 World Population Hits 6 Billion
The world's booming population stretches Earth's resources. Related Riverdeep activities: Factors Affecting Population Growth, Carrying Capacity
Apr. 5, 1999 Cystic Fibrosis Treatment
A nasal spray is found to correct some cells in the airways of cystic fibrosis patients. Related Riverdeep activity: Cystic Fibrosis