Reducing global emissions of carbon dioxide (CO2) over the coming century will be more challenging than society has been led to believe, according to a new research commentary.

A nationwide initiative starting tomorrow will enable volunteers to track climate change by observing the timing of flowers and foliage.

Leading representatives from indigenous and scientific communities will take part in a landmark climate change symposium at NCAR in Boulder.

Natural processes may prevent oceans from warming beyond a certain point, helping protect some coral reefs from the impacts of climate change, new research finds.

As the city of New Orleans struggles to rebuild from the devastation of Hurricane Katrina, researchers are learning more about weather and climate and their impacts on society.