North America

UCS Examines Climate Change From Sea To Shining Sea

More imminent than deadly viruses or terrorists at national events is the phenomenon of climate change, a force examined in a groundbreaking new report released today by the Union of Concerned Scientists. Titled National Landmarks at Risk: How Rising Seas, Floods and Wildfires are Threatening the United States’ Most Cherished Historic Sites, the study examines

Megastorm Could Result In Californian Megaflood

Talk of flooding to an Australian these days and you’ll discover just how affected we all were by the 2010–2011 Queensland floods. Nearly forty people lost their lives and $30 billion AUD was racked up in damages. New geologic evidence should similarly concern residents of California according to an article in Scientific American entitled ‘California Megaflood:

Trigger for Past Rapid Sea Level Rise Discovered

Scientists have discovered the cause for rapid sea level rise in two specific historic events using climate and ice sheet models. The process, known as saddle-collapse, was at the heart of two specific sea level rise events: the Meltwater pulse 1a (MWP1a) around 14,600 years ago and the ‘8,200 year’ event. The research, published in the

Native American Populations Descend from Three Key Migrations

New research has discovered that Native American populations ranging from Canada to the southern tip of Chile all arose from three migrations, with the majority descended almost entirely from one single group of First American migrants that crossed from Asia into America across the then existing Beringia land bridge, more than 15,000 years ago. The

Movin' On Up – Global Warming Forcing Plants, Animals North & Up-Slope

Previous studies of plant and animal migrations have offered indications that something — perhaps rising temperatures — was driving species northward and/or to higher altitudes. But these studies were isolated and doubts remained as to the true trigger of these movements and migrations. But now comes evidence from the largest-scale analysis to date that such northward, migratory expansions and accelerating movements up-slope are largely attributable to warming and climate change. The ecological impacts of these shifts are unknown at present.

Research Looks at Beavers Role in River Restoration

The restoration of rivers throughout America needs to be carried out with a mind for the role played by the North American beaver, says a Kansas State University professor. Often known as ecosystem engineers, the beavers have been involved in the role and flow of rivers for centuries, long before humans crossed the land masses

Spirit Bears, and How You Can Help Protect Them [VIDEOS]

“Spirit bears” (aka Kermode bears) are a very unique subspecies of North American black bears. About 1/10th of the Kermode bear subspecies are born white (hence the name), due to some sort of genetic variation scientists are yet to pinpoint. The most common belief is that bears are born with white hair for the same

Arctic Cold Holding Carbon Explosion Intact… For Now

A new study has shed light on the possible dangers being kept intact by the Arctic cold. According to the study, published in the British journal Nature Geoscience, climate change’s warming of the Arctic ice could end up releasing massive stores of carbon dioxide from the Arctic soil. In fact, the carbon stores have been

The Day After the Decade After Tomorrow

The movie The Day After Tomorrow saw the planet globally affected by the cessation of the ocean conveyor belt, or, more precisely known as the thermohaline circulation (THC). The northern hemisphere suffered massive drops in temperature, rises in sea level and a variety of other climate conditions. Putting aside the fantastical nature of the speed

Jet Stream Changes due to Global Warming?

In an article that just screams northern-hemispheric superiority, MSNBC has touched only briefly upon new research from scientists at the Carnegie Institute. According to Cristina Archer and Ken Caldeira of the Carnegie Institution’s Department of Global Ecology, Earth’s jet streams are shifting; possibly as a result of global warming. However they are upfront with the

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