Content with the tag: “asteroid impacts”
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Asteroid Impact Could Destroy Ozone Layer
New research funded by a NASA Exobiology grant is helping scientists understand what would happen to life on Earth if an asteroid crashed into the deep ocean. The model shows that a medium-sized asteroid could affect atmospheric chemistry on our planet, resulting in global ozone depletion. Ozone in Earth’s atmosphere helps protect living organisms from ultraviolet radiation. If ozone levels were depleted for a long period of time, life could face a difficult future.Source: [Planetary Science Institute ]
October 27, 2010 / Posted by: Aaron Gronstal
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Dinosaur-Killer was Soft on Algae
.jpg.jpg?image=/images/324.jpg&width=452 "A view of the sea cliff at Stevns Klint, Denmark. Credit: R. Summons")
A view of the sea cliff at Stevns Klint, Denmark. Credit: R. Summons
The asteroid impact that many researchers claim was the cause of the dinosaur die-off was bad news for marine life at the time as well. But new research funded by NASA shows that microalgae – one of the primary producers in the ocean – bounced back from the global extinction in about 100 years or less.Source: [astrobio.net]
October 2, 2009 / Written by: Michael Schirber
.jpg.jpg?image=/images/324.jpg&width=950 "A view of the sea cliff at Stevns Klint, Denmark. Credit: R. Summons")
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