Earth: Science news of the year, 2008

Science News writers and editors looked back at the past year's stories and selected a handful as the year's most interesting and important in Earth. Follow hotlinks to the full, original stories.

Rocks in the Jack Hills of Western Australia hosted zircon crystals that contain tiny mineral inclusions, such as the one denoted by the arrow in the false-color inset. The zircons and inclusions are more than 4 billion years old and contain evidence suggesting an early start for tectonic activity on Earth.
Rocks in the Jack Hills of Western Australia hosted zircon crystals that contain tiny mineral inclusions, such as the one denoted by the arrow in the false-color inset.