World

How did Earth get its oxygen? Researchers dive for answers in Lake Huron sinkhole.

Doyle Rice, USA TODAYComments Off on How did Earth get its oxygen? Researchers dive for answers in Lake Huron sinkhole.

We know that the rise of oxygen on Earth was key to the development of all life over the past two billion years. But how did the oxygen get here?

      
Doyle Rice, USA TODAY
http://api-internal.usatoday.com.akadns.net

Related Articles
World

U.S., Colombia vow to battle record surge in coca production

Associated Press

President Trump has threatened to decertify Colombia as a partner in the war against drugs

        
World

Ex-president of Argentina faces arrest over alleged bombing coverup

Special to USA TODAY

A judge has requested her judicial immunity be lifted.

        
World

What do lions really want? Some stability

Special to USA TODAY

Mara Lion Project director Nic Elliot talks about steps taken to save lions, and what the rest of us can do to help.