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Origins of Human Culture Linked to Rapid Climate Change
Rapid climate change during
the Middle Stone Age,
between 80,000 and 40,000
years ago, sparked surges in
cultural innovation in early
modern human populations,
... > full story
The Mammoth's Lament: How Cosmic Impact Sparked Devastating Climate Change
Researchers have found
evidence of a major cosmic
event near the end of the
Ice Age. The ensuing climate
change forced many species
... > full story
Reading Rock to Understand How Climate Change Unfolds
Geologists reads rock,
looking for the natural
rules that govern the
Earth’s climate in the
absence of human activity.
New work is challenging many
... > full story
Research Helps Paint Finer Picture of Massive 1700 Earthquake
In 1700, a massive
earthquake struck the west
coast of North America, but
a lack of local
documentation has made
... > full story
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Ice-Free Arctic May Be in Our Future, International Researchers Say
May 9, 2013 — Analyses of the longest continental sediment core ever collected in the Arctic provide "absolutely new knowledge" of Arctic climate from 2.2 to 3.6 million years ago. The research has major ... > full story -
First Biological Evidence of a Supernova
May 8, 2013 — In fossil remnants of bacteria, researchers have found a radioactive iron isotope that they trace back to a supernova in our cosmic neighborhood. This is the first proven biological signature of a ... > full story -
Climate Change, Not Human Activity, Led to Megafauna Extinction
May 6, 2013 — Most species of gigantic animals that once roamed Australia had disappeared by the time people arrived, a major review of the available evidence has concluded. The research challenges the claim that ... > full story -
Elucidating Environmental History With 100 Million Laser Beams
April 29, 2013 — By combining high-resolution surface data obtained from laser scanning with subsurface geodata, scientists have succeeded for the first time in providing a full picture of so-called karst depressions ... > full story -
Ice Tubes in Polar Seas -- 'Brinicles' or 'Sea Stalactites' -- Provide Clues to Origin of Life
April 24, 2013 — Life on Earth may have originated not in warm tropical seas, but with weird tubes of ice -- sometimes called "sea stalactites" -- that grow downward into cold seawater near the Earth's poles, ... > full story -
Geochemical Method Finds Links Between Terrestrial Climate and Atmospheric Carbon Dioxide
April 22, 2013 — Scientists used a new chemical technique to measure the change in terrestrial temperature associated with a major shift in global atmospheric CO2 concentrations nearly 34 million years ago. Their ... > full story -
First 2,000-Year-Long Temperature Reconstructions for Individual Continents
April 21, 2013 — Past climate change varied remarkably between regions. This is demonstrated in a new study coordinated by the international Past Global Changes (PAGES) project, which reconstructed temperature over ... > full story -
Sea-Ice Ecosystem Possibly Triggered Evolution of Baleen Whales and Penguins
April 18, 2013 — The origin of the unique plankton ecosystem of the circum-Antarctic Southern Ocean can be traced back to the emergence of the Antarctic ice sheets approximately 33.6 million years ago. This discovery ... > full story -
Maya Long Count Calendar Calibrated to Modern European Calendar Using Carbon-14 Dating
April 11, 2013 — The Maya are famous for their complex, intertwined calendric systems, and now one calendar, the Maya Long Count, is empirically calibrated to the modern European calendar, according to an ... > full story -
A Comet, Not an Asteroid, May Have Killed the Dinosaurs, Experts Propose
April 4, 2013 — In a geological moment about 66 million years ago, something killed off almost all the dinosaurs and some 70 percent of all other species living on Earth. Only those dinosaurs related to birds appear ... > full story
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