Two Mexican scientists win the Frontiers award for their research on the mass extinction of species. The BBVA foundation awards Gerardo Ceballos and Rodolfo Dirzo for their findings on how the impact of humans on nature has caused the fastest disappearance of animals and plants in the last two million years.

“Every time a species becomes extinct we are removing bricks from the wall and, soon, the wall is going to collapse,” says Ceb allos. The specialist warns that there is still an opportunity to reverse the effects of the great extinction, although time is running out.