articles

Los cigarrillos electrónicos son ampliamente promovidos y utilizados para ayudar a los fumadores a dejar los cigarrillos tradicionales, pero un nuevo análisis de la Universidad de California en San Francisco (UCSF) encontró que los fumadores adultos que usan cigarrillos electrónicos son en realidad 28 por ciento menos propensos a dejar de fumar.

University of Utah lab experiments found that when temperatures get warmer, woodrats suffer a reduced ability to live on their normal diet of toxic creosote - suggesting that global warming may hurt plant-eating animals.

"This study adds to our understanding of how climate change may affect mammals, in that their ability to consume dietary toxins is impaired by warmer temperatures," says biologist Denise Dearing, senior author of the research published online Jan. 13 in the British journal Proceedings of the Royal Society B.

Jason-3, a U.S.-European oceanography satellite mission with NASA participation that will continue a nearly quarter-century record of tracking global sea level rise, lifted off from Vandenberg Air Force Base in California Sunday at 10:42 a.m. PST (1:42 p.m. EST) aboard a SpaceX Falcon 9 rocket.

Jason-3 is an international mission led by the National Oceanic and Atmospheric Administration (NOAA) in partnership with NASA, the French space agency CNES, and the European Organisation for the Exploitation of Meteorological Satellites.

"Jason-3 will take the pulse of our changing planet by gathering environmental intelligence from the world's oceans," said Stephen Volz, assistant administrator for NOAA's Satellite and Information Service. 

A UC Davis scientist flying in a pollution-detecting airplane provided the first, and so far only, estimates of methane emissions spewing from the Aliso Canyon Natural Gas Storage Facility in Southern California since the leak began on Oct. 23, 2015.

Those estimates were provided to the California Air Resources Board in November. Pilot and UC Davis project scientist Stephen Conley continues to measure emissions from the still uncontrolled leak, which has displaced thousands of residents in the affluent Porter Ranch neighborhood in northern Los Angeles. On Jan. 6, Gov. Jerry Brown declared a state of emergency in the community.

To date, Conley estimates that the leak has emitted nearly 80,000 tons of methane, or about 1,000 tons per day.

Soil frost is a nearly universal process in the Arctic. In a recent dissertation by doctoral student Marina Becher at Umeå University, it is shown that the frequency and extent of soil frost is important for the release of the greenhouse gas carbon dioxide from arctic soil.

Soil in the Arctic has for thousands of years gathered large quantities of decomposed organic matter due to the decomposition being slow at the low temperatures in the region. As temperatures in the Arctic are increasing, there is a growing concern that the organic matter stored in the ground will be decomposed and released as carbon dioxide. Such a process would contribute to the ongoing increase in this greenhouse gas in the atmosphere.