Animals
How sharks sense 'bad' weather coming, and where they go to hide
Why dogs need more help than cats in extreme heat
Warming waters have caused bull sharks to act differently
Meet 'Saltwater Sean': The diver cleaning up the Atlantic one bottle at a time
Hoards of giant viruses live in Arctic ice—and they may be protecting it
New Brunswick invasive species council raises alarm over harmful rose
Seasonal allergies seem worse this year. Experts explain why it may feel like it
Trash 'island' on Guatemalan lake poses health risks, threatens livelihoods