The Year in Earth Science

#50: Confirmed: 1969 Meteorite Brought Genetic Building Blocks From SpaceMore evidence that asteroids may have led to the emergence of life on earth.

#67: Drilling, Not Earthquake, Caused Giant Hot Mud VolcanoSome claim an earthquake caused this mud river, but new research says otherwise.

#73: Giant Ice Meteors Fall From Clear Skies 20-pound chunks of ice falling on a sunny day? It's no urban myth.

#88: Bacteria Can Control the WeatherThe tiny organisms may play a big role in causing precipitation.