标签：#Earth Science

The crust expands at mid-ocean rifts. But how?

The heat of the Hadean may have come from impacts as well as the interior.

New satellite imagery reveals how much terrain has shifted in the wake of the twin quakes.

The maps and images show the extent of destruction and give rescue operations a tool to find any remaining survivors.

Rock weathering may release or draw down carbon dioxide—it depends on the rock.

It's unclear whether the system is currently intact.