Why some aphids can't stand the heat
... The ground can be more than 20 degrees Fahrenheit warmer than the cool, shady plant. To test the effect of heat on aphids themselves, the scientists subjected juveniles to 95 F (35 C) for four hours. The heat-treated aphids hosting bacteria with mutated promoters lived, but didn't reproduce. "The he...Marine scientists monitor longest mammal migration
...rs everyone said humpback whales could be found in warmer waters during the winter months, but this was the first time we were actually able to quantify this on a global scale, and relate it to these long distance migrations" said Rasmussen. Researchers conducted the survey by identifying individual hump...Natural anti-freeze -- how arthropods survive the cold
Given the choice, many of us would opt for warmer climes during the bleak midwinter. However, most of us cannot afford to move abroad for a few months, so instead we pile on extra layers of clothing to keep warm. Arthropods face much the same dilemma, as they cannot migrate long distances to avoid l...New metal crystals, formed on a cotton assembly line
...ed oven and heated 70 to 200 degrees centigrade or warmer for four to 16 hours, uniform metal crystals form at the hydroxyl sites. The researchers called this method a "green process," requiring only heat, the crystalline cellulose and the metal salts. Other attempts to get uniform nanometals have result...Cold is hot in evolution -- UBC researchers debunk belief species evolve faster in tropics
... to common belief, species do not evolve faster in warmer climates. UBC Zoology PhD candidate Jason Weir a...assumption is that species simply evolve faster in warmer climates." "Our analysis shows that new species actually evolve faster as we move towards the pole...Smithsonian study concludes Caribbean extinctions occurred 2M years after apparent cause
...d algae are more common in the more nutrient-poor, warmer waters on the Caribbean side." Several approaches were used to reconstruct the environmental and ecological conditions of the Caribbean as the Isthmus rose. "Changes in the body size of fossil cupuladriid bryozoans indicate the strength of upwellin...Regardless of global warming, rising CO2 levels threaten marine life
...on rate in the carbonate system. At the same time, warmer water also absorbs less carbon dioxide, which makes the ocean less acidic. These two climate effects balance each other, which results in negligible net climate effect on ocean pH." The addition of carbon dioxide into the oceans also affects the carb...Tundra disappearing at rapid rate
...there was an upslope surge of trees in response to warmer temperatures. Its like it waited until conditions were just right and then it decided to get up and run, not just walk." Danby and Dr. David Hik, also from the Faculty of Science, reconstructed changes in the density and altitude of treeline forest...Discovery of new cave millipedes casts light on Arizona cave ecology
...during the last Ice Age, when northern Arizona was warmer and wetter, millipedes lived in leaf litter. As the climate warmed, they sought refuge in caves, where the subterranean realm provides more constant climatic conditions enabling their survival. Representing two distinct species (one occurring in on...Climate changes brews trouble for marine life in European Seas, Marine Board-ESF report says
...ch has shown that the Northern Hemisphere has been warmer since 1980 than at any other time during the last two millenniums. As a result the increase in temperature under climate change was generally higher in northern than in southern European seas. The latest European Science Foundation-Marine Board stu...Corals that can fight global warming may one day help fragile reefs
...d Harvell. However, the precise connection between warmer waters and coral disease is unclear. "It is diffic...e surface and algae in the interior. Moreover, the warmer waters cause increased virulence of some pathogens as well as a diminished ability of corals to figh...Mellow in Europe, crazy in America
...t there, and 20 years from now when it's 2 degrees warmer you're going to see it in the forest." "Some people are thinking of species as static, like they can't evolve," she says. Her study shows otherwise....Scientists warn of climate change risk to marine turtles
...by the temperature of eggs during incubation, with warmer temperatures producing females and cooler conditions producing males. Temperatures during nesting also need to be at the right level for eggs to develop healthily and hatch successfully. 'We are stunned by these results and what they could mean for...AAAS releases video and first board consensus statement on climate change
... and fishing seasons have changed, too, because of warmer weather and shorter winters. Stenek noted that he has seen "probably close to a hundred feet of land that's been eroded away on the north side of the island." Village officials say that since 2001, the island has lost an average of nearly 23 feet of ...US needs to plan for climate change-induced summer droughts
...events. Though many climate change models predict warmer and wetter weather for parts of the Earth, the potential for drought in regions like the southwestern U.S. is actually greater, said Jim Coakley, a professor of atmospheric sciences at Oregon State University and a co-organizer of the AAAS symposium....Changes in west coast marine ecosystems significant
...n 20 years. Near-shore waters were two degrees (C) warmer than average, surf zone chlorophyll levels were 50 percent of normal, and nutrient levels were reduced by one-third. Changes in water movement, triggered by the wind shifts, had a drastic effect on mussel and barnacle larvae, which decreased by 83 an...Antarctic warming to reduce animals at base of ecosystem, shift some penguin populations southward
...major glacial stage. "We know that the climate was warmer then, sea levels were higher by a couple of meters compared to today. Lyons points to the fact that all the global climate models predict a warming in the Antarctic and a decrease in sea ice along its margins. "Those two things will have great ...Climate change only one symptom of a stressed planet Earth
...additional carbon released from the biosphere in a warmer climate will enhance climate change during the 21st century further than the changes that will result from fossil fuel emissions alone. Kenneth Denman, IPCC WGI Chapter 7 Coordinating Lead Author (Senior Scientist, Canadian Centre for Climate Model...Satellite data vital to UN climate findings
... understanding of the evolution of ice sheets in a warmer climate. In particular they documented large changes taking place in polar regions, e.g. Greenland and Antarctica, which result from climate warming, over the most inaccessible regions of the world," Rignot said. Satellites are useful for helping ......l decomposition process, he said, does speed up in warmer or wetter conditions, which many anticipate as a result of climate change and global warming. In that event, nitrogen should more rapidly be made available to plants, at least initially spurring increased vegetation growth and offsetting carbon losse...