SCIENCE: Greenland nears fastest melt rate in 12,000 years
The vast Greenland ice sheet is melting at some of its fastest rates in the past 12,000 years. And it could quadruple over the next 80 years if greenhouse gas emissions don’t decline dramatically in the coming decades.
Ice Age manatees may have called Texas home
(University of Texas at Austin) Manatees don’t live year-round in Texas, but these gentle sea cows are known to occasionally visit, swimming in for a ‘summer vacation’ and returning to warmer waters for the winter. New research has found fossil evidence for manatees along the Texas coast dating back to the most recent ice age. The discovery raises questions about whether manatees have been visiting for thousands of years, or if ice age manatees once called Texas home.
How to stop global warming? The most controversial solutions explained – Eco-Business
Depending on who you ask, geoengineering is either a threat to serious climate action, a faraway back-up plan or a necessary part of today’s climate policy. All would likely agree it is contentious. Geoengineering encompasses a broad spectrum of proposed…
Greenland is on track to lose ice faster than in any century over 12,000 years
If human societies don’t sharply curb emissions of greenhouse gases, Greenland’s rate of ice loss this century is likely to greatly outpace that of any century over the past 12,000 years, a new study concludes. Scientists say the results reiterate the need for countries around the world to take action now to reduce emissions, slow the decline of ice sheets, and mitigate sea level rise.
Greenland’s ice melting faster than at any time in past 12,000 years
Greenland’s ice is starting to melt faster than at any time in the past 12,000 years, research has shown, which will raise sea levels and could have a marked impact on ocean currents. New measurements show the rate of melting…
Stellar explosion in Earth’s proximity
(Technical University of Munich (TUM)) When the brightness of the star Betelgeuse dropped dramatically a few months ago, some observers suspected an impending supernova – a stellar explosion that could also cause damage on Earth. While Betelgeuse has returned to normal, physicists from the Technical University of Munich (TUM) have found evidence of a supernova that exploded near the Earth around 2.5 million years ago.
Mixing of the planet’s ocean waters is slowing down, speeding up global warming, study finds – Washington Post
The reduced up and down mixing is expected to have sweeping implications beyond just accelerating global warming. It is projected to increase energy available to hurricanes and other storms, reduce essential nutrients for fish in upper ocean layers and diminish…
Marine biodiversity reshuffles under warmer and sea ice-free Pacific Arctic
Climate warming will alter marine community compositions as species are expected to shift poleward, significantly impacting the Arctic marine ecosystem.
Lessons from a cooling climate
Usually, talk of carbon sequestration focuses on plants: forests storing carbon in the trunks of massive trees, algae blooming and sinking to the seabed, or perhaps peatlands locking carbon away for tens of thousands of years. While it’s true that plants take up large amounts of carbon from the atmosphere, the rocks themselves mediate a great deal of the carbon cycle over geological timescales. Processes like volcano eruptions, mountain building and erosion are responsible for moving carbon through Earth’s atmosphere, surface and mantle.
Lessons from a cooling climate
Usually, talk of carbon sequestration focuses on plants: forests storing carbon in the trunks of massive trees, algae blooming and sinking to the seabed, or perhaps peatlands locking carbon away for tens of thousands of years. While it’s true that plants take up large amounts of carbon from the atmosphere, the rocks themselves mediate a great deal of the carbon cycle over geological timescales. Processes like volcano eruptions, mountain building and erosion are responsible for moving carbon through Earth’s atmosphere, surface and mantle.
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