Researchers Forecast 59 Percent Chance of Record Low Arctic Sea Ice in 2008
April 30 — New calculations indicate the record low minimum extent of sea ice across the Arctic last September has a three-in-five chance of being shattered again in 2008 because of continued warming temperatures and a preponderance of younger, thinner ice. (University of Colorado at Boulder press release) More

Scientists Discover New Ocean Current
April 30 — Scientists have discovered a new climate pattern, the North Pacific Gyre Oscillation which explains changes in the water important in helping commercial fishermen understand fluctuations in the fish stock. (Georgia Institute of Technology press release) More

Before Fossil Fuels, Earth's Minerals Kept CO2 in Check
April 28 — Over millions of years carbon dioxide levels in the atmosphere have been moderated by a finely-tuned natural feedback system – a system that human emissions have recently overwhelmed. (Carnegie Institution press release) More

Northern Lights Glimmer with Unexpected Trait
April 25 — Some light in Earth's aurora glow is polarized – a state not thought possible for the aurora, according to new observations that may improve understanding of Earth's upper atmosphere, its magnetic field, and the energies of particles from the sun. (American Geophysical Union press release) More

Stratospheric Injections to Counter Global Warming Could Damage Ozone Layer
April 24 — A much-discussed idea to offset global warming by injecting sulfates into the stratosphere would drastically affect the ozone layer. (NCAR/UCAR press release) More

Better Regional Monitoring of CO2 Needed as Global Levels Continue Rising
April 24 — Monitoring Earth's rising greenhouse gas levels will require a global data collection network 10 times larger than the one currently in place in order to quantify regional progress in emission reductions, scientists say. (University of Colorado at Boulder press release) More

Ozone Hole Recovery May Reshape Southern Hemisphere Climate Change
April 24 — A full recovery of the stratospheric ozone hole could modify climate change in the southern hemisphere and even amplify Antarctic warming, according to scientists. (University of Colorado at Boulder press release) More

Sierra Nevada Rose to Current Height Earlier Than Thought
April 23 — Scientists have found that the central Sierra Nevada largely attained its present elevation 12 million years ago, roughly 8 or 9 million years earlier than commonly thought. (Stanford University press release) More

Tiny Tremors Can Track Extreme Storms in a Warming Planet
April 17 — Data from faint earth tremors caused by wind-driven ocean waves suggest extreme ocean storms have become more frequent over the past three decades, new research suggests. (Seismological Society of America press release) More

Methane Sources Over the Last 30,000 Years
April 16 — Using novel isotopic studies, scientists were able to identify the most important processes responsible for changes in natural methane concentrations over the transition from the last ice age into our warm period. (Helmholtz Association of German Research Centres press release) More

Changing Jet Streams May Alter Paths of Storms and Hurricanes
April 16 — Scientists say that Earth's changing jet streams fit the predictions of global warming models and have implications for the frequency and intensity of future storms, including hurricanes. (Carnegie Institution press release) More

Absence of Clouds Caused Pre-Human Supergreenhouse Periods
April 10 — In a world without human-produced pollution, biological productivity controls cloud formation and may be the lever that caused supergreenhouse episodes during the Cetaceous and Eocene, according to paleoclimatologists. (Pennsylvania State University press release) More

Flowers' Fragrance Diminished by Air Pollution
April 10 — Air pollution from power plants and automobiles is destroying the fragrance of flowers and thereby inhibiting the ability of pollinating insects to follow scent trails to their source, a new study indicates. (University of Virginia press release) More

How Strong is a Hurricane? Just Listen
April 9 — Researchers think there may be a better, cheaper way of determining how powerful a hurricane is – a technique that involves listening for the storms with acoustic sensors. (Massachusetts Institute of Technology press release) More

'Revolutionary' CO2 Maps Zoom in on Greenhouse Gas Sources
April 7 — A new, high-resolution, interactive map of U.S. carbon dioxide emissions from fossil fuels has found that the emissions aren't all from where we thought. (Purdue University press release) More

Climate Change is Not a Swindle
April 2 — New research shows no reliable connection between the cosmic ray intensity and cloud cover, dealing a blow to the skeptics who argue that climate change is all due to cosmic rays rather than to man-made greenhouse gases. (Institute of Physics press release) More

Models Look Good When Predicting Climate Change
April 2 — A new study by meteorologists shows that current climate models are quite accurate and can be valuable tools for those seeking solutions on reversing global warming trends. (University of Utah press release) More

Researchers Confirm Dead Zone off Texas Coast Since 1985
April 2 — Researchers at Texas A&M University have confirmed for the first time that a "dead zone" has existed off the Texas coast for at least the past 23 years and will likely remain there, causing potential harmful effects to marine life in the area. (Texas A&M University press release) More

Continents Loss to Oceans Boosts Staying Power
April 1 — New research suggests that the geological staying power of continents comes partly from their losing battle with the Earth's oceans over magnesium. (Rice University press release) More

Researchers Perform Multi-Century High-Resolution Climate Simulations
April 1 — Using state-of-the-art supercomputers, climate scientists have performed a 400-year high-resolution global ocean-atmosphere simulation with results that are more similar to actual observations of surface winds and sea surface temperatures. (DOE/Lawrence Livermore National Laboratory press release) More

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