Science & Society
- Genetics
Baby swaps, crime scenes, and DNA testing
By looking at animal DNA, investigators are solving crimes and conservationists are helping save endangered species.
- Humans
A human migration fueled by dung?
When people crossed from Asia to the Americas thousands of years ago, burning dung may have kept them warm.
- Environment
Cliff snails and rock climbers
Rock climbers can accidentally wipe out communities of cliff snails.
