Melting Ice Releases Ancient Microbes
By MEGAN SCUDELLARI - THESCIENTIST
Added: Mon, 23 Apr 2012 14:56:35 UTC
Living cells escaping from Antarctic glaciers could speed global warming and affect marine life.
As climate change defrosts the Earth’s poles, masses of ancient microbes—some that were captured in ice over 750,000 years ago—are emerging from deep-freeze in the Antarctic, according to a feature report from Scientific American.
The melting Antarctic ice sheets, once thought to be barren, are teeming with microscopic cells and liberate living bacteria as they melt, according to Montana State University professor John Priscu, who has grown the ancient bacteria in his lab. “There’s a lot of history in that ice sheet,” Priscu told Scientific American. “It’s a way of recycling genomes. You put something on the surface of the ice and a million years later it comes back out.”
Rob Dunn - Scientific American Comments
As humans have come to dominate the planet, they have modified not only their own evolutionary course but also that of fellow species. Although such alterations help us survive, their unintended evolutionary consequences often produce harmful results that threaten our well-being
Leigh Phillips - Scientific American Comments
Less than two weeks after the state's senate passed a bill banning state agencies from reporting that sea-level rise is accelerating, research has shown that the coast between North Carolina and Massachusetts is experiencing the fastest sea-level rise in the world.
- - National Center For Science... 19 Comments
Anti-Evolution and Anti-Climate Science Legislation Scorecard: 2012
Damian Carrington - The Observer 3 Comments
"In the long run, I would still be more concerned about the impact of climate change, but this work shows that even if we stabilise the climate, we might still get sea level rise due to how we use water."
- - Sense About Science 6 Comments
Welcome to this questions and answer session on cross fertilisation, which has also been called contamination, with Wendy harwood and Huw Jones.