Phys.Org Mobile: Top predators key to extinctions as planet warms

But research has shown that top consumers—predators and herbivores—have an especially strong effect on many other species. In a warming world, these species are "biotic multipliers," increasing the extinction risk and altering the ranges of many other species in the food web.

Live Chat on Heat Waves and Climate Change, 1:30 P.M. EDT Today: Scientific American

Join an online chat with SA's David Biello, who has covered the energy and climate beat since 1999 and will answer your questions about the science behind this week's heat wave in the eastern and midwestern U.S.

Rio +20: Top scientist appeals for better communication of risk - News - Professional Resources - PreventionWeb.net

[Sir John Beddington] "Climate change and better weather technology allow us to predict extremes well in advance and to do it well..."

Tackling global warming in 21 easy steps - The Washington Post