As the U.S. Senate considers climate change legislation, 18 leading scientific organizations have sent a letter to members of the senate reaffirming the scientific consensus that climate change is occurring and that greenhouse gases from human activities are the primary driver.

The National Center for Atmospheric Research (NCAR) has passed an Open Access policy requiring that peer-reviewed research published by its scientists and staff in scientific journals be made publicly available online through its institutional repository.

Students, parents, and teachers are invited to enjoy hands-on science and Halloween fun at Super Science Saturday on October 24 at NCAR.

Preliminary research at NCAR suggests that biological particles may contribute significantly to the mass of organic carbon stored in atmospheric aerosols. The study is an important step for scientists.

While most El Niños tend to inhibit Atlantic hurricanes, the Modoki variety, with its peak warming displaced further west from the Atlantic, appears to leave more room for a bumper crop in at least some years.