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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.  |
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.  |
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 February 2007 Sally Adee |
Escape From Snowball Earth Early Earth didn't do things half-way: It may or may not have ever been a solidly frozen "snowball" in the deep geological past, but it was never a half-frozen ball of slush, according to a new study.  |
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.  |
Wired April 2000 Oliver Morton |
Ice Station Vostok The fast track to the moons of Jupiter - and the key to life on Earth - is a prehistoric lake nearly three miles beneath the Antarctic ice cap.  |
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.  |
Chemistry World August 28, 2007 Tom Westgate |
Repairing DNA Could Let Frozen Bacteria Survive for Millennia An international team of scientists believe they have strong evidence that bacteria trapped in permafrost are able to survive for hundreds of thousands of years by repairing their DNA.  |
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...  |
Smithsonian October 2006 Anne Bolen |
Life in the Field - Frozen in Time Glaciers in the Pacific Northwest have recorded hundreds of years of climate history, helping researchers plot how quickly the planet is warming.  |
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 April 2007 Carolyn Gramling |
Ice Twists Under Pressure Confined inside tiny, hollow cylinders called carbon nanotubes, and subjected to high pressures similar to those found at a planet's core, water freezes into tiny ice spirals that resemble the DNA double helix, a new study shows.  |
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 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.  |
HHMI Bulletin Fall 2012 Virginia Hughes |
Dianne Newman: Connecting Cultures Medical and environmental microbiologists have separate scientific cultures, but the same he same methods geochemists apply to sediments and ice cores can be tweaked for cells, tissues, and organs.  |
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.  |
Popular Mechanics September 2006 |
Scientists Are Finding Life In Earth's Coldest, Hottest, Weirdest Places By creating an alternative life chemistry in the lab, astrobiologist Steven Benner hopes to uncover a formula for alien microbes. How five big questions about life on our planet are shaping the search for it on other worlds.  |
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?  |
IEEE Spectrum February 2013 Dave Levitan |
Laser Eyes Spy a Big Melt in the Arctic Airborne altimeters yield a disturbing picture of polar ice loss  |
Chemistry World November 29, 2012 Jon Evans |
Messenger spots Mercury performing organic chemistry Nasa's Messenger spacecraft has uncovered evidence that not only does water ice exist on the surface of the planet Mercury, but in many places this ice appears to be covered in a 10cm-thick layer of soot-like organic material.  |
Popular Mechanics December 16, 2008 Matthew Hutson |
5 Projects Ask if Life on Earth Began as Alien Life in Space For years, scientists have considered the possibility of exogenesis, the idea that life arrived on Earth from another planet, and not just the building blocks of life, but organisms that were ready to rock and roll when they arrived.  |
Geotimes March 2005 Naomi Lubick |
Paleo-Antarctic Puzzle Even though Antarctica was at the south pole around 35 million years ago, it was warm and relatively ice free. What exactly caused its shift to a deep freeze has long puzzled paleoclimatologists.  |
Geotimes January 2004 Naomi Lubick |
Longer polar ice record Geoscientists have beefed up a dataset documenting ice cover at Earth's poles, revealing a longer and slightly different picture than painted in the past by satellite observations.  |
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.  |
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  |
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.  |
Smithsonian July 2007 J. Madeleine Nash |
Chronicling the Ice Long before global warming became a cause celebre, Lonnie Thompson was extracting climate secrets from ancient glaciers. He finds the problem is even more profound than you might have thought.  |
Geotimes June 2005 |
Geomedia Selling Extreme Life on the Extreme Screen... Books: Earth: An Intimate History... On the Shelf: Climate Change Picks from Kim Stanley Robinson... Maps: New View of North America... etc.  |
Popular Mechanics March 15, 2010 Trevor Williams |
Iceberg Forensics: Predicting the Planet's Future With Antarctic Ice Something new is happening with the ice streams and glaciers. They are getting thinner, and they are getting thinner because they are speeding up.  |
Chemistry World April 9, 2009 Lewis Brindley |
'Nickel famine' caused ancient oxygen rise A crucial increase in atmospheric oxygen that occurred around 2.4 billion years ago could have been triggered by a shortage of nickel in the oceans, according to Canadian researchers.  |
Wired September 22, 2008 Damon Tabor |
Scientists May Soon Outnumber Penguins at Earth's Poles Tens of thousands of scientists are zipping up their parkas for the latest International Polar Year initiative.  |
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.  |
Popular Mechanics March 18, 2009 Andrew Moseman |
Mars Researchers Take an Arctic Road Trip This trip is meant to be a dry run for an even more extreme environment -- the surface of Mars.  |
Popular Mechanics February 19, 2010 Trevor Williams |
On Thick Ice: Live From An Antarctic Drilling Trip The Integrated Ocean Drilling Program is exploring the ocean floor around Antarctica to learn how the ice sheet reacted in warmer climates of the past and how they might respond to future warming.  |
Chemistry World November 10, 2010 Mike Brown |
Sulfur story unearths oxygen environment Earth's atmosphere could have supported complex life 400 million years earlier than thought, according to sulfur isotope signatures found in some of the oldest rocks on Earth.  |
Scientific American September 2008 Krista West |
Researchers hone seismic skills to peer inside glaciers Seismic data enable scientists to peer inside melting glaciers before they calve  |
Geotimes June 2005 Megan Sever |
Odd Microbes at Yellowstone Researchers recently found in Yellowstone National Park what could provide clues to finding life on other planets: a thin layer of living and fossilized microbes just beneath a rock's surface.  |
Outside October 2002 Ian Frazier |
Terminal Ice Hot enough for you? Go to the bottom of the planet -- or the top -- and you can't miss the warning signs of a warm apocalypse. And at the heart of the mystery, like broken shards of a colder climate, float the icebergs, ghost-white messengers trying to tell us something we can't fathom.  |
Geotimes May 2007 Kathryn Hansen |
Martian Pole Boasts Icy Detail A new map of Mars' south pole revealed that the ice cap is composed almost entirely of water ice and measures up to 3.7 kilometers thick.  |
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.  |
Geotimes December 2004 Sara Pratt |
Antarctic Ice Connections The West Antarctic ice sheet contains 3.2 million cubic kilometers of ice. Were it to collapse due to global warming, it would raise global sea level by 5 meters, catastrophically inundating low-lying areas.  |
Geotimes April 2004 |
Early volcanic living? Microbes thrive in unexpected places, including seafloor hotspots, where energy and nutrients from hydrothermal vents or volcanic activity make life easy.  |
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 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.  |
IEEE Spectrum September 2011 Paden et al. |
A Next-Generation Ice Radar Scientists can now probe polar ice sheets better than ever using synthetic-aperture radar  |
Chemistry World February 13, 2014 Simon Poulton |
The Earth as a cradle for life This enjoyable book by Stacey and Hodgkinson takes a long-term view of Earth's development as a habitable planet, incorporating physical, chemical and biological processes on the early Earth, to the modern world.  |
Geotimes May 2004 Naomi Lubick |
Mineral-Making Microbes For the first time, researchers have found direct evidence that microbes can create templates for unique mineral growth. The discovery could inspire new avenues for materials research, as well as for the search for evidence of life on Earth and other planets.  |
Geotimes June 2007 Megan Sever |
Antarctic Ice May be Grinding to a Halt Some of Antarctica's ice sheets may not be in as much danger as once thought.  |
National Defense December 2009 Austin Wright |
Polar Ice Surveillance At Rock Bottom Prices University of Kansas researchers needed an unmanned aerial vehicle that could carry 120 pounds worth of radar equipment at low altitudes and over icy terrain to measure vital information for the Navy in Antarctica.  |
Chemistry World January 9, 2012 Simon Hadlington |
A question mark over cubic ice's existence Chemistry textbooks may have to be rewritten after scientists in the UK showed that an exotic type of ice crystal formed from supercooled water has probably been misidentified and might not exist.  |