human impact

As shelter-in-place orders quieted the city of San Francisco, its sparrow population developed softer, sexier songs.

Male Asian elephants are forming long-term, all-male groups to forage in agricultural areas of India.

Sharks and rays can get entangled in abandoned fishing gear, leading to injuries or death.

Highways and byways are among the man-made environmental alterations driving the evolution of animals on contemporary timescales, with implications for ecology.