North America's Northernmost Lake Affected By Global Warming

The speed and range of these transformations--unprecedented in the lake's last 8,000 years--suggest that climate change related to human activity could be at the source of this phenomenon.

The researchers' conclusions are based on the analysis of a sediment core extracted in the center of Ward Hunt Lake in August 2003. This 18 centimeter long sediment core containing algae pigments and diatom remnants was used by the researchers as a biological ... Full Story »