Ancient kauri tree log from Ngawha, New Zealand. Credit: Nelson Parker Radiocarbon measurements on the remains of 42,000-year-old New Zealand kauri trees provide the basis for better calibration of geological archives of this period. The last complete reversal of the Earth’s magnetic field, the so-called Laschamps event, took place 42,000 […]

Wind energy scientists at Cornell University have released a new global wind atlas – a digital compendium filled with documented extreme wind speeds for all parts of the world –  to help engineers select the turbines in any given region and accelerate the development of sustainable energy. This wind atlas […]

The global study examined hourly records of temperature, cloud cover, specific humidity, and precipitation. (One of the Expedition 40 crew members aboard the International Space Station photographed this nighttime image showing city lights in at least half a dozen southern states from some 225 miles above the home planet. Lights […]

Oxygen levels in the ancient oceans were surprisingly resilient to climate change, new research suggests. Scientists used geological samples to estimate ocean oxygen during a period of global warming 56 million years ago — and found “limited expansion” of seafloor anoxia (absence of oxygen). Global warming — both past and […]

Fishing boats amidst “Arctic sea smoke” near Qingdao, China on January 7th. Arctic sea smoke is a result of frigid air passing over relatively warm water; the phenomenon is rare, even in the Arctic. Credit: Shaoqing Wang Even with the COVID-19-related small dip in global carbon emissions due to limited travel […]

The stratospheric potential vorticity field on February 10, 2018. The Stratospheric Polar Vortex is about to split in two, and the weakening of the vortex was followed around two weeks later by a severe cold air outbreak over Europe known as the Beast from the East. Data from ERA-Interim reanalysis […]

Artistic diagram of the subsea and coastal permafrost ecosystems, emphasizing greenhouse gas production and release. Credit: Original artwork created for this study by Victor Oleg Leshyk at Northern Arizona University. New research suggests slow but substantial greenhouse gas release from subsea permafrost. In the far north, the swelling Arctic Ocean […]

The Gibson Generating Station is a coal-burning power plant located in Gibson County, Indiana. Credit: Emily Grubert, Georgia Tech Decarbonizing U.S. electricity production will require both construction of renewable energy sources and retirement of power plants now operated by fossil fuels. A generator-level model described in the December 4, 2020, […]

Water from Canada’s Mackenzie River enters the blue Arctic Ocean in July 2012. White areas in the top half of the photo are largely sea ice, while those below are clouds over land. Credit: NASA Earth Observatory A new study shows that increased heat from Arctic rivers is melting sea […]

Oxygen ranks right up there as one of the most important resources for use in space exploration.  Not only is it a critical component of rocket fuel, it’s also necessary for astronauts to breathe anywhere outside Earth’s atmosphere.  Availability of this abundant resource isn’t a problem – it’s widely available throughout […]