Atmospheric measurements made at Earth's geographic poles provide a convenient way of validating and calibrating global circulation models. (University of Illinois?Urbana-Champaign release)

A team of geologists has determined the age of the oldest known meteorite impact on Earth -- a catastrophic event that generated massive shockwaves across the planet billions of years before a similar event helped wipe out the dinosaurs. (Stanford University release)

Researchers from the Lawrence Livermore National Laboratory have determined that the depth of an injection of carbon dioxide into the deep ocean is a good predictor of how effective that location is at sequestering carbon away from the atmosphere. (Department of Energy/Lawrence Livermore National Laboratory release)

A large-scale study has for the first time shown a clear link in North America between acid rain and widespread declines across the breeding range of a songbird, the wood thrush. (Cornell University release)

Scientists at the Hebrew University of Jerusalem have demonstrated that sea spray over the oceans contributes to cleansing air that has been polluted overland. (Hebrew University of Jerusalem release)