News articles tagged with 'dioxide'
Climate sensitivity to CO2 more limited than extreme projections
— 25 Nov 2011 09:00 | EnvironmentA new study suggests that the rate of global warming from doubling of atmospheric carbon dioxide may be less than the most dire estimates of some previous studies - and, in fact, may…
Sugar-grain sized meteorites rocked the climates of early Earth and Mars
— 2 Apr 2011 11:34 | AstronomyBombardments of 'micro-meteorites' on Earth and Mars four billion years ago may have caused the planets' climates to cool dramatically, hampering their ability to support life, according…
Study: Emissions trading doesn't cause pollution 'hot spots'
— 30 Mar 2011 16:37 | EnvironmentPrograms that allow facilities to buy and sell emission allowances have been popular and effective since they were introduced in the U.S. two decades ago. But critics worry the approach…
Blocking carbon dioxide fixation in bacteria increases biofuel production
— 30 Mar 2011 16:19 | EnvironmentReducing the ability of certain bacteria to fix carbon dioxide can greatly increase their production of hydrogen gas that can be used as a biofuel. Researchers from the University of…
Cutting carbon dioxide helps prevent drying
— 28 Mar 2011 18:42 | EnvironmentRecent climate modelling has shown that reducing the concentration of carbon dioxide in the atmosphere would give the Earth a wetter climate in the short term. New research from Carnegie…
Tree resin the key evidence of current and historic insect invasions
— 28 Mar 2011 15:07 | BiologyA University of Alberta-led research team has discovered that insects that bore into trees as long ago 90 million years, or as recently as last summer, leave a calling card that's rich…
Ancient 'hyperthermals' a guide to anticipated climate changes
— 17 Mar 2011 18:39 | EnvironmentBursts of intense global warming that have lasted tens of thousands of years have taken place more frequently throughout history than previously believe, according to evidence gathered…
Northern peatlands a misunderstood player in climate change
— 15 Mar 2011 21:23 | EnvironmentUniversity of Alberta researchers have determined that the influence of northern peatlands on the prehistorical record of climate change has been over estimated, but the vast northern…
Water for an integrative climate paradigm
— 14 Mar 2011 20:36 | EnvironmentInternational climate negotiations are deadlocked between the affluent global North and 'developing' South, between political Left and Right, and between believers and deniers. Now,…
Supercritical carbon dioxide Brayton Cycle turbines promise giant leap
— 5 Mar 2011 13:09 | TechnologySandia National Laboratories researchers are moving into the demonstration phase of a novel gas turbine system for power generation, with the promise that thermal-to-electric conversion…