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Oxygen's Ups and Downs in Early Atmosphere and Ocean
October 23, 2012 — Geochemists challenge the simple notion of an up-only trend for early oxygen on Earth, and provides the first compelling direct evidence for a major drop in oxygen after the gas's first rise. This ... > full story -
Connection Between Hawaii's Dueling Volcanoes Explained
October 23, 2012 — A new study finds that a deep connection about 50 miles underground can explain the enigmatic behavior of two of Earth's most notable volcanoes, Hawaii's Mauna Loa and ... > full story -
NASA Sees Active Region on the Sun Emit Another Flare
October 23, 2012 — The sun emitted a significant solar flare on Oct. 22, 2012, peaking at 11:17 pm EDT. The flare came from an active region on the left side of the sun that has been numbered AR 1598, which has already ... > full story -
Biologists Record Increasing Amounts of Plastic Litter in the Arctic Deep Sea
October 23, 2012 — The sea bed in the Arctic deep sea is increasingly strewn with litter and plastic waste, according to ... > full story -
Simulating Secure Carbon Dioxide Storage
October 23, 2012 — The race is on to develop the most secure solution for storing carbon dioxide in Earth's crust. A small Norwegian company has developed a method for studying precisely how this greenhouse gas is ... > full story -
Rapid Changes in the Earth's Core: The Magnetic Field and Gravity from a Satellite Perspective
October 22, 2012 — Annual to decadal changes in Earth's magnetic field in a region that stretches from the Atlantic to the Indian Ocean have a close relationship with variations of gravity in this area. From this it ... > full story -
New Understanding of Antarctica's 'Weight Loss': Sea Level Is Rising With Little Apparent Contribution from Antarctica
October 22, 2012 — Scientists have found that the present sea level rise is happening with apparently very little contribution from Antarctica as a whole. The large amount of water flowing away from West Antarctica ... > full story -
Offsetting Global Warming: Targeting Solar Geoengineering to Minimize Risk and Inequality
October 21, 2012 — By tailoring geoengineering efforts by region and by need, a new model promises to maximize the effectiveness of solar radiation management while mitigating its potential side effects and ... > full story -
Mississippi River Diversion Helped Build Louisiana Wetlands, Geologists Find
October 21, 2012 — Geologists used the occasion of the Mississippi River flood of the spring of 2011 to observe how floodwaters deposited sediment in the Mississippi Delta. Their findings offer insight into how new ... > full story -
World's Largest Earthquake Drill: JPL Scientists Participate in Great California ShakeOut Exercises
October 19, 2012 — On Thursday, Oct. 18, at 10:18 a.m. PDT, more than 9.3 million Californians, including employees at NASA's Jet Propulsion Laboratory, Pasadena, Calif., "dropped, covered and held on" during the 5th ... > full story
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