Could you run for 100 hours this year? How about just doing a little more than 15 minutes each day? In fact, these goals are essentially equivalent, but one certainly sounds more ambitious than the ...

Ancient lycophytes may have survived extreme heat during Earth’s worst extinction using a rare photosynthesis method.

Less than a year ago, United States company Colossal Biosciences announced it had “resurrected” the dire wolf, a megafauna-hunting wolf species that had been extinct for 10,000 years. Within two days ...