Ringling Brothers and Barnum & Bailey will no longer feature pachyderms in their performances, bringing about an end to one of the hallmarks of the American circus.

And how they can be marshaled to fight it.

A Massachusetts ballot initiative calling for expanded living space for chickens could affect consumers and producers across the country.

Take a photo of a mystery critter using your cellphone, and iNaturalist will try to tell you what it is.

Large initiatives are underway to pinpoint the next big viral threats—but some virologists believe the task is too hard.

... and its possible resurrection

The president jumps the shark.

Long-banned pollutants called PCBs could wipe out many orca groups within the next century.

A shocking sequence shows the huge mammals scaling steep cliffs, then falling to their death.