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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.   |
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. |
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
October 2006 |
Geocatastrophes Catastrophe and Opportunity in an Ancient Hot-House Climate... When the Mediterranean Dried Up: Forensics of a Geocatastrophe... The Great Death: Redefining a Mass Extinction... |
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. |
Science News
June 28, 2003 |
TimeLine: June 24, 1933 Lightning, most awesome of the spectacular forces of nature, has yielded some of its mystery to science... Electric current untangles salt and paint on old vases... Sea water nitrates increased by unknown "something" |
Chemistry World
February 4, 2009
Nina Notman |
Marine sponges show their age Whilst searching for oil, a team of international scientists have found something completely different -proof that animal life existed more than 635 million years ago. |
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. |
Chemistry World
September 16, 2014
James Urquhart |
Ozone layer no longer thinning Scientists say that they are cautiously optimistic about the recovery of the ozone layer. |
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. |
Chemistry World
April 8, 2015
Elisabeth Bowley |
Salty soil set to hamper Bangladesh crop production Salinity changes are a serious threat to agricultural in coastal Bangladesh |
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 |
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. |
Chemistry World
October 11, 2012
Andy Extance |
Perovskite posits answer to xenon riddle If meteorites and the Earth were formed from similar materials at the same time, where did the xenon go? Some scientists think that the answer could be found in xenon trapped in the Earth's iron core, or in ice, water or rocks near the surface. |
Chemistry World
May 11, 2006
Jon Evans |
Sea Water Assumes the Xenon Mantle Geochemists have uncovered evidence that sea water incorporates noble gases into the Earth's mantle, overturning current theories of how noble gases are transported beneath the crust. |
National Defense
February 2016
Stew Magnuson |
Planetary Defense: A New Hot Market With little fanfare, NASA in January opened up its planetary defense coordination office with a mandate to identify potential chunks of rock hurdling toward Earth and to stop them if possible. |
Geotimes
May 2006
Carolyn Gramling |
Natural Bumps in the Atmosphere Temperatures at Earth's surface have been rising for decades, but in the upper atmosphere, the temperature is slowly dropping. In explaining this change, scientists have focused on human-related causes -- but a new study shows that nature should not be ignored. |
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. |
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... |
Science News
January 26, 2008 |
Timeline: From the January 22, 1938, issue Lightning strokes caught by a rotating camera... Oceans half billion years old, their salt tells scientists... Youth at the wheel found skillful but a great hazard... |
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. |
BusinessWeek
November 27, 2006
Adam Aston |
Wild Fixes For A Warming Planet Scientists are envisioning giant but risky engineering projects to undo climate change. |
Chemistry World
July 13, 2012
Simon Hadlington |
Where did Earth's water come from? One big question that remains unanswered about the evolution of the early Earth is how volatiles such as hydrogen, nitrogen and carbon arrived -- their presence being crucial to the origins of water and life. |
Chemistry World
January 18, 2009
Hayley Birch |
Plants reprogrammed to produce potential drugs Plants could one day function as factories for producing anti-cancer drugs, say US scientists. |
Wired
July 2000
Oliver Morton |
Fuel's Paradise World-class contrarian Thomas Gold has a theory about life on the planet: It's pumping out of the Earth's crust - and it's swimming in oil. |
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. |
IEEE Spectrum
April 2012
Gregory L. Matloff |
Deflecting Asteroids A solar sail could use light to nudge an earthbound rock into an orbit we could live with |
Wired
July 2003
Gregg Easterbrook |
We're All Gonna Die! But it won't be from germ warfare, runaway nanobots, or shifting magnetic poles. A skeptical guide to Doomsday. |
IEEE Spectrum
August 2006
Stephen Cass |
Summer Reading Hollow Earth: The Long and Curious History of Imagining Strange Lands, Fantastical Creatures, Advanced Civilizations, and Marvelous Machines Below the Earth's Surface by David Standish... Kids to Space: A Space Traveler's Guide by Lonnie Jones Schorer... etc. |
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. |
Chemistry World
October 2011
Philip Ball |
Column: The Crucible Salt Awareness week seeks to highlight the health hazards of salt overconsumption. |
Science News
August 12, 2000 |
TimeLine: August 9, 1930 A Fish With Hands... Little Eros on Way to Visit Earth... Birthplace of the Moon... |
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. |
