The global effects of El Niño and volcanoes may mask a more gradual yet stronger global warming trend over the last century. The study indicates that anthropogenic influences have become more substantial in recent decades. (National Center for Atmospheric Research release)

A new hydrothermal vent field dubbed "The Lost City" was discovered December 5 on an undersea mountain in the Atlantic Ocean. The unexpected discovery occurred at 30 degrees North on the Mid-Atlantic Ridge during a research cruise. (National Science Foundation release)