Similar Articles |
|
Geotimes December 2006 Megan Sever |
Dates Help Paint Picture of Early Migration Geologists and archaeologists are both trying to solve the puzzle of how and when the first settlers migrated to the Americas. New radiocarbon dates from marine sediments in the Arctic are helping geologists better create a timeline for their piece of the puzzle, which could in turn help archaeologists with their job. |
Geotimes March 2007 Megan Sever |
Out of Africa and into Russia Researchers excavating at a well-known archaeological site in Russia have found evidence of the earliest-known modern humans in Europe, pushing back the dates of when modern humans arrived in Europe. |
Geotimes February 2007 Katherine Unger |
Climate to Blame in Cultural Collapses The Anasazi people in the Four Corners region of the American Southwest disappeared suddenly, possibly due to climate change that made food and water sources scarce. Researchers are now linking several past periods of climate change with failed civilizations. |
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. |
Geotimes February 2004 Hetherington et al. |
Quest for the Lost Land The search for early Americans is taking researchers to the coast of British Columbia, where a now-submerged landscape may hold clues to the first settlers' coastal migration. |
Geotimes November 2006 Margaret Putney |
Ice Reveals Polar Temperature Seesaw A new ice core from Antarctica directly correlates abrupt changes in Greenland's climate over the last 150,000 years with counterpart changes in Antarctica -- offering further indication that the two icy regions are connected by ocean currents in a sort of bipolar seesaw. |
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 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 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. |
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 November 2007 Erin Wayman |
Sudden Climate Change Not Neanderthals' Downfall New research suggests abrupt climate change is not to blame for the extinction of Neanderthals. Instead, competition from modern humans probably played a large role. |
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. |
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 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 May 2003 Greg Peterson |
A new trigger for Ice Age retreat About 14,600 years ago, a huge pulse of freshwater drained from continental ice sheets into the world's oceans. Now scientists have a new theory for where it came from. |
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 February 2004 Julie Brigham-Grette |
One If by Land, Two If by Sea A review of Lost World: Rewriting Prehistory -- How New Science is Tracing America's Ice Age Mariners by Tom Koppel |
Geotimes November 2005 Megan Sever |
Neanderthal Neighbors New research on Neanderthal and human artifacts excavated from a French cave is indicating that the two groups lived here in successive generations, supporting the idea that Neanderthals and humans coexisted |
Geotimes February 2004 Jackson & Wilson |
The Ice-Free Corridor Revisited Geologists are exploring North America's glacial history to retrace the steps of the first Americans. |
Popular Mechanics July 1, 2009 Andrew Moseman |
5 Climate Studies That Don't Live Up to Their Hype A leading climate scientist argues that overbroad claims by some researchers -- coupled with overblown reporting in the media -- can undermine the public's understanding of climate issues. |
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. |
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. |
Outside February 2004 Natasha Singer |
Break On Through The dream of a Northwest Passage linking the Atlantic to the riches of Asia has driven explorers and visionary adventurers for centuries. With climate change in the air, The author braves the frigid 900-mile journey to find out if the old, mythic dream is becoming an epic new reality. |
Geotimes September 2005 Megan Sever |
Footprints Push Back American Migration A newly found set of human footprints in Mexico is suggesting that people were in the Americas much earlier than previously thought -- 30,000 years earlier. |
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. |
Popular Mechanics April 9, 2009 Trevor Williams |
Up Close With Ocean Cores: JOIDES Scientists Put the Seabed Under the Microscope Among the 30 geologists and oceanographers on the research ship JOIDES Resolution are seven paleontologists who specialize in the small fossil shells that make up the bulk of the deep-sea sediment cores we drill. |
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 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 January 2006 Megan Sever |
Old "Footprints" Stomped Out? A dating debate over prints found in the Valsequillo Basin in southern Mexico leaves open one of the biggest questions in American archaeology -- when people first colonized the Americas. |
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. |
BusinessWeek July 17, 2006 John Carey |
Business On A Warmer Planet Rising temperatures and later winters are already costing millions. Here's how some companies are adapting to the new reality. |