The U.S. has a new diplomat tasked with combating threats to plants, animals and water worldwide. It's the first time the State Department is linking the issues of biodiversity and water in one role.

"The loss of nature and rising water insecurity are global health threats that must be confronted together," Secretary of State Antony Blinken said in a tweet.

Monica Medina will take on that role as the Biden administration's special envoy for biodiversity and water resources.