6 things to know about Earth's 6th mass extinction
June 23, 2015, 3:45 p.m. by Russell McLendon
A new study reports the long-suspected mass extinction of wildlife is 'already under way.'
Can Lego-like coral reefs rebuild marine ecosystems?
April 13, 2015, 8:39 p.m. by Bryan Nelson
A student has created a customizable reef system that speeds up reef formation.