Earth Sciences news
Large methane release could cause abrupt climate change as happened 635 million years ago
Space & Earth / Earth Sciences
May 28, 2008 |
4.1 / 5 (53) |
11
An abrupt release of methane, a powerful greenhouse gas, about 635 million years ago from ice sheets that then extended to Earth’s low latitudes caused a dramatic shift in climate, triggering a series of events ...
NASA Sees Arctic Ocean Circulation Do an About-Face
Space & Earth / Earth Sciences
Nov 13, 2007 |
4.6 / 5 (47) |
0
A team of NASA and university scientists has detected an ongoing reversal in Arctic Ocean circulation triggered by atmospheric circulation changes that vary on decade-long time scales. The results suggest ...
Ice Age lesson predicts a faster rise in sea level
Space & Earth / Earth Sciences
Aug 31, 2008 |
4.2 / 5 (51) |
27
If the lessons being learned by scientists about the demise of the last great North American ice sheet are correct, estimates of global sea level rise from a melting Greenland ice sheet may be seriously underestimated.
Journey to the center of the earth: Discovery sheds light on mantle formation
Space & Earth / Earth Sciences
Apr 11, 2008 |
4.3 / 5 (50) |
3
Uncovering a rare, two-billion-year-old window into the Earth’s mantle, a University of Houston professor and his team have found our planet’s geological history is more complex than previously thought.
Alaskan storm cracks giant iceberg to pieces in faraway Antarctica
Space & Earth / Earth Sciences
Oct 02, 2006 |
4.3 / 5 (50) |
0
A severe storm that occurred in the Gulf of Alaska in October 2005 generated an ocean swell that six days later broke apart a giant iceberg floating near the coast of Antarctica, more than 8,300 miles away. ...
CO2 higher today than last 2.1 million years
Space & Earth / Earth Sciences
Jun 18, 2009 |
4.4 / 5 (49) |
28
Researchers have reconstructed atmospheric carbon dioxide levels over the past 2.1 million years in the sharpest detail yet, shedding new light on its role in the earth's cycles of cooling and warming.
Research team says extraterrestrial impact to blame for Ice Age extinctions
Space & Earth / Earth Sciences
Sep 24, 2007 |
4.7 / 5 (46) |
0
What caused the extinction of mammoths and the decline of Stone Age people about 13,000 years ago remains hotly debated. Overhunting by Paleoindians, climate change and disease lead the list of probable causes. ...
3.2 billion-year-old surprise: Earth had strong magnetic field
Space & Earth / Earth Sciences
Apr 04, 2007 |
4.2 / 5 (51) |
0
Geophysicists at the University of Rochester announce in today’s issue of Nature that the Earth’s magnetic field was nearly as strong 3.2 billion years ago as it is today.
Mystery of infamous 'New England Dark Day' solved by 3 rings
Space & Earth / Earth Sciences
Jun 07, 2008 |
4.4 / 5 (48) |
5
At noon, it was black as night. It was May 19, 1780 and some people in New England thought judgment day was at hand. Accounts of that day, which became known as 'New England's Dark Day,' include mentions of midday meals by ...
Greenland ice core analysis shows drastic climate change near end of last ice age
Space & Earth / Earth Sciences
Jun 19, 2008 |
4.4 / 5 (48) |
15
[B]Temperatures spiked 22 degrees F in just 50 years, researchers say[/B] Information gleaned from a Greenland ice core by an international science team shows that two huge Northern Hemisphere temperature spi ...
Researchers find origin of 'breathable' atmosphere half a billion years ago
Space & Earth / Earth Sciences
Oct 29, 2007 |
4.6 / 5 (45) |
2
Ohio State University geologists and their colleagues have uncovered evidence of when Earth may have first supported an oxygen-rich atmosphere similar to the one we breathe today.
Deep heat solution to 500-million year mystery
Space & Earth / Earth Sciences
Nov 12, 2008 |
4.4 / 5 (47) |
1
Scientists from the universities of Leicester and Cambridge and from the British Geological Survey have published new research in the journal Geology this month (November) shedding new light on a 500-million year old myster ...
Santorini Eruption Much Larger than Originally Believed
Space & Earth / Earth Sciences
Aug 23, 2006 |
4.5 / 5 (46) |
0
An international team of scientists has found that the second largest volcanic eruption in human history, the massive Bronze Age eruption of Thera in Greece, was much larger and more widespread than previously believed.
Lake Mead could be dry by 2021
Space & Earth / Earth Sciences
Feb 12, 2008 |
4.1 / 5 (50) |
8
There is a 50 percent chance Lake Mead, a key source of water for millions of people in the southwestern United States, will be dry by 2021 if climate changes as expected and future water usage is not curtailed, ...
Earth's Ozone Layer: Good News and a Puzzle
Space & Earth / Earth Sciences
May 26, 2006 |
4.5 / 5 (45) |
0
Think of the ozone layer as Earth's sunglasses, protecting life on the surface from the harmful glare of the sun's strongest ultraviolet rays, which can cause skin cancer and other maladies.
