Add Yahoo as a preferred source to see more of our stories on Google. A photo taken in 1968 by astronauts aboard the Apollo 8 sparked the first-ever Earth Day. As I watched the Artemis II send back ...

Continental clues: Modern continental rocks carry chemical signatures from the very start of our planet’s history, challenging current theories about plate tectonics. Researchers have made a new ...

The question of life’s origins is a chicken-and-egg problem that is perhaps best explained by the ribosome. These tiny intercellular structures translate genes into proteins, a process essential to ...

CU Boulder professors explain Earth Day’s history, impact, what it’s become and if it’s still relevant If you were at the University of Colorado Boulder in April 1970, you were likely aware―very aware ...