Synopsis

Two hundred and fifty-two million years ago, Earth endured its most catastrophic mass extinction, an event that eradicated approximately ninety percent of all living species. The cause was a series of unprecedented volcanic eruptions, spewing an estimated seven hundred thousand cubic miles of magma and rock into the atmosphere. Volcanic gases choked the air and rendered the oceans acidic, while noxious fumes decimated the ozone layer, exposing the planet to lethal levels of ultraviolet radiation