News tagged with north america
Oil sands digger uncovers dinosaur
A heavy equipment operator unearthed what appears to be a nearly complete plesiosaur while digging in Canada's oil sands, Syncrude announced Thursday.
Other Sciences / Archaeology & Fossils
Nov 24, 2011 |
4.5 / 5 (21) |
47
Over 65 million years North American mammal evolution has tracked with climate change
Climate changes profoundly influenced the rise and fall of six distinct, successive waves of mammal species diversity in North America over the last 65 million years, shows a novel statistical analysis led ...
Dec 26, 2011 |
4 / 5 (17) |
16
|
Paleo-Indians settled North America earlier than thought: study
New discoveries at a Central Texas archaeological site by a Texas A&M University-led research team prove that people lived in the region far earlier – as much as 2,500 years earlier – than previously ...
Other Sciences / Archaeology & Fossils
Mar 24, 2011 |
4.3 / 5 (15) |
4
|
Stanford climate scientists forecast permanently hotter summers
The tropics and much of the Northern Hemisphere are likely to experience an irreversible rise in summer temperatures within the next 20 to 60 years if atmospheric greenhouse gas concentrations continue to increase, according ...
Jun 06, 2011 |
3.7 / 5 (14) |
16
Bering Strait may be global temperature stabilizer
(Phys.org) -- A diverse group of climate researchers has found after running computer simulations that the strait that separates North America and Russia might be serving as a global temperature stabilizer. ...
Space & Earth / Earth Sciences
Apr 10, 2012 |
4.5 / 5 (10) |
61
|
European settlers not the first to alter american landscape
One of the great American myths claims that before Europeans colonists settled in North America, Native Americans existed in total harmony with nature, surviving on the renewable bounty that the continent's ...
Space & Earth / Earth Sciences
Mar 31, 2011 |
4.8 / 5 (9) |
16
|
Today's severe drought, tomorrow's normal
(PhysOrg.com) -- While the worst drought since the Dust Bowl of the 1930s grips Oklahoma and Texas, scientists are warning that what we consider severe drought conditions in North America today may be normal ...
Space & Earth / Earth Sciences
Dec 06, 2011 |
3.6 / 5 (12) |
8
|
A cooler Pacific may have severely affected medieval Europe, North America
In the time before Columbus sailed the ocean blue, a cooler central Pacific Ocean has been connected with drought conditions in Europe and North America that may be responsible for famines and the disappearance of cliff dwelling ...
Space & Earth / Earth Sciences
Jun 09, 2010 |
3.8 / 5 (10) |
1
|
Hunters present in North America 800 years earlier than previously thought: DNA analysis
The tip of a bone point fragment found embedded in a mastodon rib from an archaeological site in Washington state shows that hunters were present in North America at least 800 years before Clovis, confirming ...
Other Sciences / Archaeology & Fossils
Oct 20, 2011 |
4.3 / 5 (7) |
2
|
Comet impact theory disproved
New data, published today, disproves the recent theory that a large comet exploded over North America 12,900 years ago, causing a shock wave that travelled across North America at hundreds of kilometres per hour and triggering ...
Space & Earth / Space Exploration
Jan 26, 2009 |
2.9 / 5 (9) |
6
A mammoth task -- sorting out mammoth evolution
Mammoths were a diverse genus that roamed across Eurasia and North America during the Pleistocene era. In continental North America, at least two highly divergent species have long been recognized – woolly ...
May 30, 2011 |
4.3 / 5 (6) |
9
|
UT professor finds economic importance of bats in the billions
Bats in North America are under a two-pronged attack but they are not the only victim – so is the U.S. economy. Gary McCracken, head of the Department of Ecology and Evolutionary Biology at the University ...
Mar 31, 2011 |
5 / 5 (5) |
0
|
New research suggests North American continent is a slow eroder
(PhysOrg.com) -- When looking at the great expanse of the whole of North America, it’s difficult to not see it all as a relatively permanent plot of land between the Pacific and Atlantic oceans. It doesn’t ...
Space & Earth / Earth Sciences
Jan 06, 2012 |
4.8 / 5 (5) |
0
New study shows early North Americans lived with extinct giant beasts
(Phys.org) -- A new University of Florida study that determined the age of skeletal remains provides evidence humans reached the Western Hemisphere during the last ice age and lived alongside giant extinct mammals.
Other Sciences / Archaeology & Fossils
May 03, 2012 |
4 / 5 (6) |
21
|
Ancient Americans took cold snap in their stride
Paleoindian groups* occupied North America throughout the Younger Dryas interval, which saw a rapid return to glacial conditions approximately 11,000 years ago. Until now, it has been assumed that cooling temperatures and ...
Other Sciences / Archaeology & Fossils
Apr 12, 2010 |
4.6 / 5 (5) |
1
|
