"The art of tracking may well be the origin of science." This is the departure point for a 2013 book by Louis Liebenberg, co-founder of an organization devoted to environmental monitoring. The demise ...

To breathless media coverage, a company called Colossal Biosciences now claims to have produced three genetically engineered pups of the long-extinct dire wolf. Scientific criticism followed fast.

Long before global warming was the biggest environmental issue, the planet was in the opposite kind of funk — an ice age lasting around 2.6 million years. During this time, starting about 700,000 ...

What happened to all the megafauna? From moas to mammoths, many large animals went extinct between 50 and 10,000 years ago. Learning why could provide crucial evidence about prehistoric ecosystems ...