Rivers polluted with Tamiflu could help a resistant flu strain develop in birds
In Earth’s atmosphere, nitrous oxide threatens the ozone layer
Climate change affects the timing of flowering, migration and other natural cycles, meaning spring is coming earlier in many parts of the world.
The circle of life continues thanks to the carbon cycle
Drugs called antidepressants find their way into lakes and streams, affecting the behavior of fish living there in unexpected ways
Some products contain chemicals that can pose a serious health risk
This is the first of a two-part series on global climate change.
Halloween can scare kids and make them act strange. But animals and ecosystems respond to fear every day of the year.
Changing chemistry in the world’s oceans could affect the ability of a snail to defend itself.
In the Galápagos Islands, scientists are struggling to save some of the most endangered creatures in the world.