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Genetic Discovery May Allow Lettuce Growth Even in Hot Temperatures

2013-04-01 18:31:00| Climate Ark Climate Change & Global Warming Newsfeed

Yale Environment 360: A team of scientists has identified the specific gene in lettuce that causes the plants seeds to stop germinating in warm temperatures, a discovery they say could allow production of the food crop year-round even in the planets hotter regions. Writing in the journal The Plant Cell, the researchers say they identified a chromosome in the wild ancestor of commercial lettuce varieties that enabled seeds to germinate even in warm temperatures. When the chromosome was crossed with commercial varieties...

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Warming temperatures could multiply Katrina-like hurricanes : study

2013-03-18 23:30:00| Climate Ark Climate Change & Global Warming Newsfeed

Reuters: The number of Atlantic storms with magnitude similar to killer Hurricane Katrina, which devastated the U.S. Gulf Coast in 2005, could rise sharply this century, environmental researchers reported on Monday. Scientists have long studied the relationship between warmer sea surface temperatures and cyclonic, slowly spinning storms in the Atlantic Ocean, but the new study attempts to project how many of the most damaging hurricanes could result from warming air temperatures as well. The extreme...

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Global Average Temperatures Are Close to 11,000-Year Peak

2013-03-13 20:57:00| Climate Ark Climate Change & Global Warming Newsfeed

Scientific American: Global average temperatures are now higher than they have been for about 75% of the past 11,300 years, a study suggests. And if climate models are any indication, by the end of this century they will be the highest ever since the end of the most recent ice age. Instrumental records of climate extend back to only the late nineteenth century. Beyond that, scientists depend on analyses of natural chronicles such as tree rings and isotope ratios in cave formations. But even these archives have...

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Ocean temperatures give early warning of Indian malaria

2013-03-03 19:00:00| Climate Ark Climate Change & Global Warming Newsfeed

SciDevNet: Researchers have developed a model that allows malaria epidemics in arid northwest India to be predicted four months in advance, helping authorities prepare for them much earlier than before. The seasonal malaria outbreaks in the region are known to be driven by higher rainfall, which allows the mosquitoes that transmit the disease to breed, and can currently be forecasted up to around a month in advance. But a study published today (3 March) in Nature Climate Change has found a strong association...

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