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Geotimes November 2004 Dickens & Pinsker |
Methane Hydrate and Abrupt Climate Change Conceivably, we live in a world with an enormous amount of gas hydrate and free gas that affects climate and global systems over time |
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. |
Geotimes December 2006 |
Top Climate News Stories of 2006 A new public face for climate change... Strong debate over storms... Thawing ice shifts water cycles... Methane climate menagerie... etc. |
Geotimes April 2005 David B. Williams |
Mass Extinction, Massive Problem The great debate continues over the Great Dying -- the largest of all mass extinctions, which occurred 250 million years ago. The latest round of research casts doubt on an extraterrestrial impact as the cause of the extinction event. |
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 October 2003 Naomi Lubick |
Vertebrates and tectonics Paleontologists suggested some new twists on tectonics and ecosystems at the annual meeting of the Society of Vertebrate Paleontology. Their ideas might offer answers to some key conundrums regarding extinction, speciation and the global distribution of vertebrate species. |
Geotimes May 2004 Sara Pratt |
Ice in the Greenhouse? The greenhouse world of the Late Cretaceous, long thought to be ice-free, may have been chillier than previously predicted. |
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. |
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 June 2004 Jay Chapman |
Evidence for Impact Winter at K/T Boundary Scientist and co-workers hope their research will revitalize interest in the impact-winter hypothesis and help resolve some of the questions swirling around the Cretaceous-Tertiary (K/T) mass extinction theory. |
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. |
Geotimes May 2004 Sara Pratt |
Ocean Anoxia Researchers are using microfossils to date ocean anoxic events, or severe oxygen depletion in the ocean, back to 132 million years ago. The findings will open up several new avenues of inquiry including the impact of the global carbon cycle perturbation on the biosphere as a whole. |
Geotimes August 2006 Megan Sever |
From Hot to Cold in the Arctic For the first time, scientists have recovered direct evidence of what life in the Arctic has been like for the past 56 million years. A new 400-meter-long sediment core is revealing that all in the Arctic has not always been as it seems. |
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 April 2007 Katherine Unger |
Two Continents, One Conclusion A sharp change in climate tens of millions of years ago was global, not regional as previously thought, according to two new studies. That could have implications for global climate change in the modern world, researchers say. |
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 July 2005 Megan Sever |
Carbon Leaching Out of Siberian Peat New research is showing that as temperatures rise across the Arctic, carbon once locked up in permafrost soils may begin escaping into the area's waterways. |
Geotimes September 2004 Megan Sever |
Slower Cooling in Oregon New research suggests that the climate in Oregon slowly cooled over 6 million years as a result of evolving grasslands pulling carbon dioxide out of the air and locking the carbon into the soil. |
Geotimes December 2004 Sara Pratt |
Acidic Waters Threaten Sea Life High acidity in the world's oceans may be threatening coral populations, such as those in the Florida Keys National Marine Sanctuary. |
Geotimes April 2005 Michael Glantz |
What Makes Good Climates Go Bad? Climates are constantly changing in both linear and nonlinear ways and over the course of life on Earth, organisms have either adjusted to those changes or perished. |
Geotimes December 2005 |
Highlights 2005 -- Paleontology The "Great Dying" debate... Tracking human migration... More "hobbits" in Indonesia... T. rex bones break ground... An evolving debate... |
Geotimes June 2003 Sara Pratt |
Amazon's ancient rain forest Paleoclimatologists have often suggested that the Amazon Basin was an arid savanna during the Pleistocene about 2 million years ago. Now, researchers have found that lowland tropical rainforest likely dominated the region at that time, just as it does today. |
Geotimes October 2005 Naomi Lubick |
Ozone Link to Permian Extinction New research on how ozone affects plants and their reproduction may be the key to figuring out what happened to trigger Earth's largest extinction event, which occurred around 250 million years ago. |
Geotimes February 2004 Megan Sever |
Geoarchaeology: The Past Comes to Light Geological stories are inseparable from the human ones. The sea level can rise causing populations to migrate. A volcano can erupt and wipe out a civilization. Climate can alter the soil and shift the course of a culture. As the natural world changes, so too does society. |
Geotimes March 2005 Naomi Lubick |
Revisiting the Lost City This discovery of this hydrothermal vent community has a wide range of implications, from Earth's methane cycles to the search for early life forms -- and life elsewhere in the universe. |
Geotimes April 2006 Megan Sever |
Undersea Methane Not to Blame New research is indicating that for at least three abrupt warming periods over the past 40,000 years, the warming was accompanied by, but not caused by, an increase in methane, and the methane increase was from the land, not the sea. |
Geotimes March 2003 S. Julio Friedmann |
Storing Carbon in Earth Carbon sequestration is capturing carbon dioxide, either from the atmosphere or emission streams, and storing it in reservoirs, such as plants or soils. Carbon dioxide could be converted to solid chemicals or injected into the deep ocean. Though there are risks, the potential pay-off is enormous. |
Chemistry World December 2, 2013 Ian Randall |
Mass extinction the result of acid rain and ozone loss Widespread rain as acidic as lemon juice and the destruction of as much as 65% of the ozone layer may have played a major role in the largest mass extinction in the fossil record. |
Reason October 2005 Sallie Baliunas |
Full of Hot Air Book review: A climate alarmist takes on "criminals against humanity" in Boiling Point: How Politicians, Big Oil and Coal, Journalists and Activists Are Fueling the Climate Crisis -- And What We Can Do to Avert the Disaster, by Ross Gelbspan. |
Geotimes January 2004 Naomi Lubick |
Saltier sea Oceanographers have documented the growing saltiness of the Atlantic in the tropics, in opposition to freshening of the polar oceans. The changes in the sea-surface salinity indicate changes in the hydrologic cycle, the researchers say, which may be attributable to human-induced climate changes. |
Geotimes November 2005 Sara Pratt |
Middens Mark Southwest Cold Snap A study of ancient rodent trash piles in Grand Canyon caves has confirmed that the American Southwest experienced the climatic period known as the Younger Dryas -- a cold snap lasting from 12,900 to 11,600 years ago. |
Geotimes July 2006 Carolyn Gramling |
Earth Soaks up Seawater Geologists have long thought that seawater does not travel very far through Earth's interior A new geochemical study, however, is challenging that notion, saying that traces of seawater exist deep inside the planet. |
Chemistry World March 2006 Katie Gibb |
Extreme Analysis High pressures, cold temperatures and inaccessible samples all make analytical work challenging for chemists. Science still has a lot to gain from studying and working in extreme environments. |
BusinessWeek August 16, 2004 John Carey |
Global Warming Consensus is growing among scientists, governments, and business that they must act fast to combat climate change. This has already sparked efforts to limit CO2 emissions. Many companies are now preparing for a carbon-constrained world. |
Geotimes October 2006 Kathryn Hansen |
Debate Continues Over Dinosaur Demise Analysis of new core samples support previous research from that the Chicxulub meteor struck about 300,000 years prior to the K/T extinction event and, therefore, did not cause extinction of the dinosaurs. |
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. |
Chemistry World April 6, 2009 Simon Hadlington |
Did salt lake halogens help cause mass extinction? Life on Earth was all but obliterated around 250 million years ago - but no-one knows why. |
Geotimes February 2006 Naomi Lubick |
Is Ocean Circulation Slowing Down? New measurements of temperature and salinity in the North Atlantic indicate that changes are occurring in this segment of the ocean's circulation that could eventually affect Earth's climate. |
Chemistry World March 11, 2014 Tim Wogan |
Dinosaur mass extinction may have been triggered by acid rain Most scientists accept the principal cause of the Cretaceous -- Tertiary mass extinction was a 10km asteroid hitting the Yucatan peninsula, but the precise mechanism by which this caused the extinction remains controversial. |
Geotimes March 2006 Kathryn Hansen |
Marine Critters Record Global Warming Layers of fossilized marine creatures have acted as an independent record of ocean temperature for millennia. Now, data from such layers is mirroring the same warming trend that instruments have shown -- suggesting humans are contributing to global warming. |
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. |
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 July 2004 Megan Sever |
Possible P/T Impact Crater A group of scientists now says they have uncovered a crater that may be responsible for the mass extinction at the end of the Permian, and their results are inciting a new flurry of controversy. |
Geotimes October 2005 Megan Sever |
Carbon's Complicated River Ride Researchers recently found that carbon moves from the atmosphere, through trees, soil and water, and back into the atmosphere in fewer than five years, indicating that the landscape is not providing as much long-term storage of carbon dioxide as hoped. |
Popular Mechanics April 3, 2009 Trevor Williams |
Ocean Drilling: How the Past Can Provide Clues to our Planet's Future Climate By pulling cores of ancient ooze from beneath the ocean floor, scientists hope to learn how the Earth responded to climate change 50 million years ago and how it may react to future warming. |
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 2006 Naomi Lubick |
Planet Warms, Plants Move in Interlopers from southern and eastern North America and from Europe made their way to Wyoming when global temperatures shot up by 5 to 10 degrees Celsius around 55.8 million years ago. |
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. |
Searcher Nov/Dec 2003 David Mattison |
Information on the Seven Seas: International Ocean Science Web Resources (Part 2) A look at three areas of international cooperation in ocean science research: the physical and chemical ocean, meteorology, and marine life. |
IEEE Spectrum January 2008 Sandra Upson |
Loser: Algae Bloom Climate-Change Scheme Doomed Planktos's ploy to combat global warming by sequestering carbon in the oceans holds no water. |