And why the 87-year-old scientist says she's not retiring yet.
The Trump administration is set to release a plan that would redefine which bodies of water are protected by the 1972 Clean Water Act.
Environmentalists in Morro Bay focus on getting fishermen back in the water with more sustainable practices.
The latest innovation in construction recalls Lincoln Logs.
While some countries burn ivory in a show of conservation, others say they should be able to decide whether or not to sell it.