Deforestation in Amazonia

Paul RacetteAgriculture, Biodiversity, Economy

Tropical forests in Amazonia are being cleared rapidly, representing an important contribution to land-use and land-cover change. This is a thoughtful article of the history, economic and environmental impacts of Amazonia deforestation.

Grim Outlook for Polar Bears

Paul RacetteBiodiversity, Ecosystems

If emissions of greenhouse gases and resulting global and Arctic warming continue apace, the study said, two-thirds of the 22,000 or so bears will disappear by midcentury. Some bear experts see that prognosis as overly dire.