Isotope evidence weakens the role of volcanism in extinction event scitation.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from scitation.org Daily Mail and Mail on Sunday newspapers.
A new study indicates that when the dinosaur-killing asteroid struck with Earth 66 million years ago, vast amounts of sulfur were hurled into the stratosphere volumes far greater than previously imagined.