A finger-length fish has reignited a long-running debate about self-awareness, cognition and how much we’ve underestimated ...

New species are being discovered at a faster rate than ever—more than 16,000 every year—and the trend shows no sign of ...

Migratory species don’t travel with a passport, but they cross borders all the time. This makes the animals’ conservation a uniquely challenging, international effort. That effort needs a lot of work, ...

A new study has found a decline in the abundance of marine fish species that move rapidly toward the poles to escape rising sea temperatures. The researchers explain that many animal species are ...