The planet is undergoing one of the largest changes in climate since the dinosaurs went extinct. But what might be even more troubling for humans, plants and animals is the speed of the change. Stanford climate scientists warn that the likely rate of change over the next century will be at least 10 times quicker than any climate shift in the past 65 million years.
With the “green” reputation of large hydroelectric dams already in question, scientists are reporting that millions of smaller dams on rivers around the world make an important contribution to the greenhouse gases linked to global climate change. Their study, showing that more methane than previously believed bubbles out of the water behind small dams, appears in ACS’ journal Environmental Science & Technology.
Researchers reviewed the likelihood of continued changes to the terrestrial climate, including an analysis of a collection of 27 climate models. If emissions of heat-trapping gases continue along the recent trajectory, 21st century mean annual global warming could exceed 3.6 °F ( 2 °C) over most terrestrial regions during 2046 to 2065 and 7.2 °F (4 °C) during 2081-2100. If warming occurs at this pace, it will probably be the most rapid large climate change in the last 65 million years.
Following our 2012 expedition of the Great Barrier Reef and Coral Sea, we are excited to announce the focus of our second major regional expedition, the Caribbean and Bermuda.
For a behind-the-scenes look at NASA's upcoming airborne campaign to study how air pollution from wildfires and other sources affects our climate, NASA will host a media day from 8-11 a.m. CDT Wednesday, Aug. 21, in Houston.
Past climates shaped the current hotspots of genetic diversity for the grey long-eared bat, one of the UK’s rarest mammals, but future climate change threatens these biodiversity hotspots, according to researchers from the University of Bristol, working in collaboration with scientists from the University of Sheffield and from across Europe.
A regional experiment to see if carbon dioxide can be stored safely and permanently underground has begun, Montana State University scientists and their partners announced Friday, July 26.
New research findings from the Centre for Permafrost (CENPERM) at the Department of Geosciences and Natural Resource Management, University of Copenhagen, document that permafrost during thawing may result in a substantial release of carbon dioxide into the atmosphere and that the future water content in the soil is crucial to predict the effect of permafrost thawing. The findings may lead to more accurate climate models in the future.
The study, published in the journal Proceedings of the National Academy of Sciences, found that a temperature anomaly of just 1ºC (in near surface air temperatures in the tropics) leads to a 3.5-Petagram (billion tonnes of carbon) anomaly in the annual CO2 growth rate, on average. This is the equivalent of 1/3 of the annual global emissions from the combustion of fossil fuels and deforestation together.
Deforestation in parts of Africa could be reversed with changes to land use, a study suggests.
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