Researchers found LUCA, our earliest common ancestor, lived 4.2 billion years ago. It had a complex biology, affecting its ...

In a new study published in Science Advances, a team led by planetary scientist Chris Moeckel from UC Berkeley offers a ...

In honor of Earth Day on Tuesday, I've brought a game of Categories ... Listeners whose answers are selected win a chance to ...

Find answers to the latest online sudoku and crossword puzzles that were published in USA TODAY Network's local newspapers.

The Journal Gazette created some nature-inspired puzzles to help the young and young-at-heart think about the environment ...