Earth

Plants absorbed carbon dioxide more efficiently under the polluted skies of recent decades than they would have done in a cleaner atmosphere, according to new findings published this week in Nature.

The results of the study have important implications for efforts to combat future climate change which are likely to take place alongside attempts to lower air pollution levels.

The research team included scientists from the Centre for Ecology & Hydrology, the Met Office Hadley Centre, ETH Zurich and the University of Exeter.

Pittsburgh, Pennsylvania - Researchers from the United States and Canada have found a fossil skeleton of a newly discovered carnivorous animal, Puijila darwini. New research suggests Puijila is a "missing link" in the evolution of the group that today includes seals, sea lions, and the walrus. The analysis of the skeleton and support for the hypotheses can be found in the Arctic was described in the April 23 issue of Nature.

Will problems associated with environmental issues improve in the next two decades? According to an analysis of student performance on PISA 2006--an international assessment of 15-year-olds--students who are the best informed about environmental science and the geosciences are also the most realistic about the environmental challenges facing the world in the next 20 years. Meanwhile, students who are least informed in these areas are the most wildly optimistic that things will improve.