Online wellness trends claim saunas and cold plunges can boost male fertility. The evidence tells a more nuanced story – and some claims don’t stack up.

Understanding what happened in these forests 56 million years ago may help humanity recognize similar thresholds before we cross them again, the lead author of a new study writes.

An institution that belongs to everyone and to no one is a fragile thing. It survives on a shared conviction that some goods are not for sale and belong to the community.

This summer will be one of the coolest in your lifetime. With better planning for these now normal extreme summers, some heat-related deaths can be prevented.