A week ago Sunday, Arctic sea ice cover reached its lowest extent ever recorded. For good reason, there has been significant media focus on how a warming sea gobbles up the ice that is polar bear ...

Provides an introduction to Earth's biomes, explaining how they are communities of living organisms shaped by climate and geography. Key factors influencing biomes include light and water availability ...

The biome concept organizes large-scale ecological variation. Terrestrial biomes are distinguished primarily by their predominant vegetation, and are mainly determined by temperature and rainfall. Aa ...

Steve Nix is a member of the Society of American Foresters and a former forest resources analyst for the state of Alabama. Tundra means rolling treeless plains. The average weather is frigid and dry ...