The evolutionary basis for love is deceptively complex. At first glance, it makes sense for positive feelings to be associated with behaviours that promote the survival and reproduction of a species.

For 50 years, scientists at the San Diego Zoo have been collecting and storing cells from rare and endangered species in its Frozen Zoo with an eye to the future. The future is here. The San Diego Zoo ...

California has given permanent endangered-species protections to several mountain lion populations along its coast, as officials warn the cats risk disappearing.

Knowing which genes are responsible for the transformations could help with developing antifungal treatments, and may have ...