When Carbon Dioxide Nearly Killed All Life on Earth
Peter Brannen, Atlantic
Who you with?I'm a science journalist, I said, jolted from my reverie on the shoulder of I-68 in Maryland, where a crowd of geologists had gathered on a field trip to poke at some rocks revealed by the highway department's dynamite. The rocks, slate gray and studded with pebbles from a punishing ice age, spoke to a mysterious global die-off at the end of the Devonian period, hundreds of millions of years ago.
Who you with?I'm a science journalist, I said, jolted from my reverie on the shoulder of I-68 in Maryland, where a crowd of geologists had gathered on a field trip to poke at some rocks revealed by the highway department's dynamite. The rocks, slate gray and studded with pebbles from a punishing ice age, spoke to a mysterious global die-off at the end of the Devonian period, hundreds of millions of years ago.