Earth
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- Environment
Flu river
Rivers polluted with Tamiflu could help a resistant flu strain develop in birds.
- Environment
A gassy threat from above
In Earth’s atmosphere, nitrous oxide threatens the ozone layer.
- Animals
A grim future for some killer whales
An oil spill off the U.S. coast 20 years ago still threatens marine life.
- Environment
Springing forward
Climate change affects the timing of flowering, migration and other natural cycles, meaning spring is coming earlier in many parts of the world.
- Animals
Bringing fish back up to size
Changing the way we fish may help rescue a population's shrinking fish.
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- Animals
Sponges’ secret weapon
An aquatic animal provides a possible new kind of disease resistance.
- Earth
Antarctica warms, which threatens penguins
Unexpected rates of warming threaten to change Antarctica and pose a threat to the survival of some of its penguins.
- Earth
Science loses out when ice caps melt
Tropical glaciers are vanishing at an especially rapid pace—and taking valuable climate records with them.
- Environment
Mood-boosting drugs make unhappy fish
Drugs called antidepressants find their way into lakes and streams, affecting the behavior of fish living there in unexpected ways.
- Fossils
South America’s sticky tar pits
The fossil-rich tar pits of Venezuela may rival those in Southern California.
