Global climate change may be altering the timing of frost events, which inhibit the growth of many plants. That change has also affected animal populations that depend on plants that suffered frost damage. (University of Maryland release)

Humans have significantly altered the global carbon cycle over the last 200 years, according to an international panel. Since the Industrial Revolution, atmospheric CO2 levels have risen at a rate of some 10 to possibly 100 times faster than at any prior time in the Earth's history. (Rutgers University release)

Expect hotter days, warmer nights, heavier rain and snowfall events, and more floods over the next century. A new study in the journal Science reviews observations, impacts, and results from some 20 global climate models. (National Center for Atmospheric Research release)