Geotimes Banner
SUBSCRIBE E-ALERTS IN PRINT ARCHIVES CLASSIFIEDS ADVERTISE CUSTOMER SERVICE CONTACT US SEARCH AGI HOME

Features
 
News
 


Geotimes Cover Image


Summer Internship Link


Faces of Earth Link


Free Trial Issue of Geotimes Link

Order your FREE
trial copy of
Geotimes
!


Where on Earth Link
Enter this month's Where on Earth? contest!


Advertise in Geotimes

 
features  
Feature Image
 
Out of Africa: Following the Arabian Trail
New geoarchaeological evidence indicates that early modern humans may have ventured out of Africa and through southern Arabia, instead of the Levant.
Erin Wayman

Tectonic Hypotheses of Human Evolution
New evidence from the Blue Nile and other locations in Africa suggests that the main formation of the East African Rift Valley coincided with major turns in human evolution, suggesting that tectonics played a major role in evolution.
M. Royhan Gani and Nahid DS Gani

Rocking the Cradle of Humanity Print Exclusive
Did modern humans evolve because of climatic or tectonic changes? Did one cause the other?
Beth Christensen and Mark Maslin



Geotimes Poll:
Do you think tectonics or climate played a larger role in human evolution in Africa?

Tectonics
Climate
Both
Neither
Don't know


or View Results

  webnews

Web Extras
Travels in Geology: Northern Ireland  posted 1/25/08
Will the candidates talk science?  posted 1/18/08
Blues' clues: UV shows diamonds' fingerprints  posted 1/11/08
Travels in Geology: Valkenburg  posted 12/19/07
Congress passes energy bill  posted 12/18/07
Travels in Geology: Copahue, Argentina  posted 11/19/07
Powerful quake rumbles through Chile  posted 11/14/07
Fires' carbon contribution
 posted 11/12/07 
Travels in Geology: Pine Creek Gorge posted 10/25/07 
Looking deep into the heart of a fault posted 10/05/07 
Travels in Geology: Madeira posted 09/27/2007 
Huge quake strikes Indonesia posted 09/12/2007 
Asteroid collision sealed dinosaurs' fate posted 09/06/2007 

More WebExtras >>> 
More Travels in Geology >>> 

News Notes
Mining leaves nasty legacy in Zambia 
Texas: where the wind comes sweepin' down the waves 
Did volcanic eruptions kill the dinosaurs? 
Cow manure adds to arsenic epidemic  
Good to drink, not good for crops  
Toxic gas caused the Great Dying? 
Environmental disasters follow oil spills 
Major oilfield found off Brazil 
Teen pregnancy in dinosaurs a good thing 
Oil exploration waning? 

Available exclusively in print...
Putting time constraints on the Triassic 
Pyrite carves Arctic landscape  
Bacterial fuel: it’s a gas 
Mineral resource of the month: arsenic 

 

Departments   Views
departments DOWN TO EARTH WITH...
Meteorologist and Scrabble-Player Marshall Shepherd

GEOMEDIA
Museums: A Fresh Look at Dinosaurs in Their Time
Books:
Soil Can Bring Down Society: A Review of Dirt: The Erosion of Civilizations

On the Web: Chef Mario Batali Goes Green

BENCHMARKS
January 2, 1960: The solar system gets a date Print Exclusive

TRENDS & INNOVATIONS
Nuclear in a Carbon-Based World Print Exclusive
The Nuclear Regulatory Commission has received the first in an expected flood of permit requests to build new nuclear reactors in the United States — something that hasn’t been done since the 1970s. The nuclear energy industry hopes it marks the turning tides from a carbon-based to a nuclear-based country.
Nicole Branan

EDUCATION & OUTREACH
Trying a Toxic Case in a Classroom
The 1982 Woburn toxic water case became a best-selling book and blockbuster movie, and is now used in a mock trial format in a classroom at Ohio State University, much to the benefit of the students who participate.
Nicole Branan


Subscribe Link

 

  views A COMMENT ON ...
Climate Change: Teaching a Moving Target
Consider the changes that have taken place in the climate debate over the last 10 to 20 years — in the 1980s, “global warming” had hardly been heard of and today, there are mainstream movies about it. How can a textbook writer or a teacher keep up?
William Ruddiman

A POLITICAL COMMENT ON...
The New Upside-Down Politics of Climate Protection
Politicians are all talking about climate change and trying to enact their own bills, but the politics of energy and climate, like politics in general, tend to be local. Will 2008 mark the “tipping point” in climate policy?
Bryan K. Mignone

GEOLOGIC COLUMN
Nuclear Power Is No Michael Jordan
Can nuclear power make a Michael Jordan-caliber comeback in the United States? Only time will tell.
Fred Schwab


Table of Contents
Where on Earth?
AGI GeoCalendar
Where on Earth Link

 

Energy Notes Link Check out this month's Energy Notes!

 

On the cover   Available from AGI
cover Geotimes Cover Image ON THE COVER
New research indicates that humans may have migrated across southern Arabia on their historic trip out of Africa. AGI/NASA.

NEXT MONTH
Oil around the world

 

 

 

  announcing
AGI Publications Link
GeoMarketplace Link
Visit AGI's Online Store and Geomarketplace!
SUBSCRIBE E-ALERTS IN PRINT ARCHIVES CLASSIFIEDS ADVERTISE CUSTOMER SERVICE CONTACT US SEARCH AGI HOME

Geotimes Home | AGI Home | Information Services | Geoscience Education | Public Policy | Programs | Publications | Careers

© 2014 American Geological Institute. All rights reserved. Any copying, redistribution or retransmission of any of the contents of this service without the express written consent of the American Geological Institute is expressly prohibited. For all electronic copyright requests, visit: http://www.copyright.com/ccc/do/showConfigurator?WT.mc_id=PubLink