North America – PlanetSave

Browsing the "North America" Tag

string(0) "" Loading...

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 […]

May 20th

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 […]

July 16th

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 […]

July 11th

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.

August 22nd

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 […]

January 4th