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Geotimes April 2003 Dave Lawrence	Microfossil lineages support sloshy snowball Earth Whether Earth's surface was completely frozen over during the glaciations about 900 to 540 million years ago (a hardball) or experienced open water near the equator (a slushball) is up for debate. Recent research now suggests that slushball conditions were more likely.
Geotimes April 2005 Sara Pratt	Space Dust and Snowball Earth Within the spiral arms of the Milky Way galaxy are thousands of giant clouds of dust. Some researchers now say that these clouds collide with Earth every 140 million years, possibly explaining the causes of two distinct periods of widespread glaciation in the planet's geologic past.
Geotimes November 2004 Naomi Lubick	Past warming for the future As the Bush administration prepares for a second term, only time will tell how its climate change policy will change in the next four years. In the meantime, discussions of the science behind climate changes abound in the journals and within the scientific community.
Geotimes December 2003 Sara Pratt	Cool Cambrian triggers life A controversial hypothesis put forth by a team of German researchers says the Cambrian explosion -- the momentous increase in biodiversity 542 million years ago that spawned most modern animal groups -- was caused by life itself.
Geotimes October 2005 Kathryn Hansen	Greenhouse Gases Revisited Scientists say now that a new method of tracking the effects of greenhouse gases could lead to a more accurate understanding of their impact on climate change, which other scientists say the Arctic is already experiencing on a dramatic scale.
IEEE Spectrum August 2010 Paul McFedries	Technically Speaking: Hacking the Planet There's plenty of controversy swirling around the idea of climate intervention -- and no shortage of new words
Geotimes December 2005 Naomi Lubick	Slushball Life Hundreds of millions of years ago, a carapace of ice may have periodically covered the entire planet. New research, however, indicates that microbes seem to have thrived in certain places that they should not have during that time, leading scientists to conclude that the snowball was more slushy than frozen solid.
Geotimes April 2005	Geomedia Arctic Climate Change in Photos... Book review: Frozen Earth: The Once and Future Story of Ice Ages by Doug Macdougall... Mapping Sinkhole Risk in Maryland...
IEEE Spectrum May 2007 William B. Gail	Climate Control We will be able to engineer the Earth to our liking -- but we'd better start now. Before we picked a climate, we would need to evolve the political, commercial, and academic institutions to get us there.
Chemistry World September 27, 2007 Simon Hadlington	Scientists Uncover How Last Ice Age Ended Scientists have shown that the end of the last age 19,000 years ago began in the higher latitudes of the southern hemisphere before sweeping into the tropics.
Geotimes September 2006 Lee Gerhard	Testing Global Warming Hypotheses Global climate change has been a natural phenomenon driven by natural processes for 4.5 billion years. Nevertheless, cultural pressures exist to identify a human cause for current global climate change.
Geotimes November 2007 Nicole Branan	Water Pours Through Pores in Sea Ice Scientists have come up with a new model that describes how water moves through the Arctic sea ice beneath melt ponds, helping them to make better climate predictions.
Geotimes October 2007 Moran & Backman	The Arctic Ocean: So Much We Still Don't Know In 2004, the Arctic Coring Expedition team took three ships to the Arctic to drill a core near the Lomonosov Ridge. The team's results are teaching us more than we ever knew about the past 65 million years in the Arctic.
Chemistry World January 23, 2013	Chemical climate proxies With the climate change debate as heated as ever, how do scientists reconstruct what the weather was like in the past? Jon Evans looks at the detective chemistry behind such environmental forensic work
Geotimes July 2005 Sara Pratt	Soaking in Extra Sun The amount of sunlight Earth's surface is absorbing has been increasing since the early 1990s, reversing the previous 30-year trend of "global dimming," during which surface sunlight diminished by about 5%.
Chemistry World July 8, 2014 Ian Crawford	Lucky planet Lucky Planet is a well-written, engaging, and thought-provoking addition to discussions of extraterrestrial life.
Scientific American July 2008 Peter Brown	NASA Satellites Watch Polar Ice Shelf Break into Crushed Ice Ice is melting at the poles much faster than climate models predict.
National Defense February 2009 Grace V. Jean	Getting to the Bottom of Global Warming -- From Space The first of several satellites designed to monitor Earth's greenhouse gases has reached orbit and will begin collecting data in the coming months.
Geotimes April 2007 Carolyn Gramling	Wallace Broecker: Changes in the Atmosphere An interview with an expert on issues of climate change about his experiences advising politicians about the consequences of climate change and his hopes for new technologies of carbon sequestration.
Geotimes August 2004 Naomi Lubick	Doubling the Ice Record A team of European researchers released their first round of results from the longest ice core ever to be recovered from a polar glacier. Measurements show some interesting temperature shifts that may cause climatologists to reevaluate their models.
Geotimes April 2004 Tim Palucka	A Climate of Your Own The largest climate modeling experiment ever devised is running on borrowed time, literally. The model is taking computing time on loan from more than 47,000 personal computers worldwide, with the full knowledge and consent of their owners.
HHMI Bulletin Winter 2013 Nicole Kresge	The Past, Present, and Future Earth What does the 4.6 billion year history of Earth tell us about our modern planet? About 150 Washington, D.C., area high school students and 15 teachers from around the United States learned the answers to these questions at the 2012 HHMI Holiday Lectures on Science.
Geotimes March 2006	Geomedia Geoscience Arts: Antarctica Through the Eyes of Writers and Artists... Television: Brewing Intelligent Design... Books: Trapped in the Ice... Plows, Plagues, and Petroleum: How Humans Took Control of Climate...
Geotimes May 2005 Naomi Lubick	Heat Imbalance Portends Problems Results from a new assessment show that Earth is absorbing more energy than it releases into space, with implications for climate change that researchers say point to future warming with consequences for melting ice sheets and sea-level rise.
Geotimes February 2006 Naomi Lubick	Trees Confound Global Warming The potential canceling-out effects of trees' low reflectivity for carbon sequestration raise questions as to whether tree planters should get carbon credits in North America, as outlined in the Kyoto Protocol.
Science News May 9, 2009	Science Past From The Issue Of May 9, 1959 Scientists predict 25% increase in carbon dioxide by the year 2000.
Geotimes June 2004 Sara Pratt	Why the Wobble? A new study says that the shifting of masses of water and ice around the globe's surface primarily drives the seasonal wobbleon its axis. The finding could lead to new ways to monitor global change.
Science News September 20, 2003	More Mars -- Better than Ever On Aug. 27, Mars and Earth were closer to each other than at any other time in the last 50,000 years. Even as Earth and Mars slowly draw apart, the Red Planet remains a dazzling sight in the night sky. There's still time to take in the view.
Geotimes July 2007 Kathryn Hansen	Ancient Ocean Burps A sediment core extracted from the ocean floor off the coast of Baja, Calif., indicates two "burps" of carbon dioxide were once released from a deep, stagnant part of the ocean.
Geotimes August 2006 Jennifer Yauck	Microbes Reshuffle Earth's Early History Previously, scientists used microfossil evidence to date the earliest eukaryotes to about 1.8 billion years old, and the earliest cyanobacteria to about 2.1 billion years old. Now, geologists present new evidence suggesting both types of organisms existed as early as 2.45 billion years ago.
Geotimes July 2007 Carolyn Gramling	X-ray Eyes in the Sky Scientists are working on the next generation of low-orbiting satellites that they hope will see far past the Earth's surface and into its interior, to better understand the structure and composition of Earth's crust, mantle and core.
Scientific American September 2008 David Appell	The Sun Will Eventually Engulf Earth--Maybe Researchers debate whether Earth will be swallowed by the sun as it expands into a red giant billions of years from now
Science News January 5, 2008	Science Safari: Focus on Our Planet The United Nations website to show communities how they can promote sustainable use of Earth's resources.
Geotimes June 2006 Katie Unger	Ancient Methane-Makers Researchers extracted methane gas from hydrothermal dikes in Western Australia and say that microbes produced the gas, which is evidence of some of Earth's earliest life.
Geotimes February 2007 Nicole Branan	Shifting Winds Shift Warming Trends? New model simulations indicate that a poleward shift in the Southern Hemisphere westerly winds could cause the Southern Ocean's carbon dioxide and heat uptake to increase by up to 20%.
Geotimes January 2004 Cynthia Martinez	Earth Science Week in the Limelight The sixth annual Earth Science Week, held Oct. 12-18, promoted understanding and appreciation of the value of earth science research and its applications and relevance to our daily lives.
Geotimes March 2006 Powell et al.	Drilling Back to the Future Antarctica plays a fundamental role in sea-level change and ocean chemistry, and has the potential for important societal impacts over human timescales.
Geotimes March 2006 Naomi Lubick	Ice Hunter: Q&A With Lonnie Thompson An interview with glaciologist and Byrd Polar Research Center scientist Lonnie Thompson about what it mean to hunt ice and about some his current work.
Science News September 3, 2005	Changing Earth Developed by the Smithsonian Institution's National Museum of Natural History, this Web site focuses on Earth's history.
Smithsonian July 2007 Eric Jaffe	Life Beyond Earth An ocean on Mars. An Earth-like planet light years away. The evidence is mounting, but are astronomers ready to say we're not alone?
Geotimes October 2003 Naomi Lubick	Observing Earth The Earth Observation Summit held this summer inaugurated a collaborative research effort by more than 30 nations to do just that: observe Earth in order to study its global climate and how it changes, while learning more about how the planet's ocean, air and land systems interact.
Geotimes December 2005 Kevin E. Trenberth	A Warming World Climate change is with us; we cannot stop it, although we can slow it down. It behooves us therefore to track how and why the climate is changing.
Reactive Reports October 2007 David Bradley	The Venusian Greenhouse A rare form of carbon dioxide in which one oxygen atom contains ten neutrons instead of the usual eight could be to blame for the searing greenhouse effect on the planet Venus.
Chemistry World November 19, 2014 Rebecca Trager	Watching carbon dioxide's globetrotting New high-resolution simulations depicting how local geography affects the transport of carbon dioxide in the Earth's atmosphere have been created by NASA.
Industrial Physicist Aug/Sep 2004 Forest, Webster & Reilly	Narrowing uncertainty in global climate change Unknowns hamper the initiation of climate-mitigation policies.
Popular Mechanics March 2007 Jennifer Bogo	NASA Mission Statement Q&A: Eyes on Earth Interview with a professor involved in a study to find out how Earth scientists view NASA's shifting priorities and how it may affect the study of the planet.
Chemistry World April 16, 2009 Jon Cartwright	Isolated microbes survive for millions of years Researchers in the US and the UK have found microbes in the Antarctic that appear to have survived in isolation, without sunlight or new supplies of nutrients, for more than a million years.
Reason November 2008	Letters Letters to the Editor: Carbon: tax, trade, or deregulate?...
Smithsonian December 2006 Cate Lineberry	Diamonds Unearthed In the first installment of a multi-part series, Smithsonian diamond expert Jeffrey Post, curator of the National Gem and Mineral Collection, explains how the rare crystals form.
Geotimes February 2005 Naomi Lubick	Virtual Climate Experiment's Results A worldwide global climate experiment that ran on tens of thousands of personal computers across the planet offered the most extreme scenario yet for global warming.