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When did turtles get their shells?
A new study suggests that turtle shells began to evolve 260 million years ago. That's 40 million years earlier than previously thought.
June 5, 2013
Scarred landscape in Oklahoma from May 20 tornado
Track left behind by ES-5 Moore-Newcastle, Oklahoma tornado on May 20, 2013. The tornado took at least 24 lives, injured hundreds and damaged 13,000 structures.
June 5, 2013
El Reno tornado on May 31 now widest ever recorded in U.S.
El Reno, Oklahoma tornado on May 31, 2013 is now widest ever recorded in the U.S. at 2.6 miles (4.2 km) wide, according to the National Weather Service.
June 5, 2013
The relentless exploitation of Asian Giant Lizards
A new study reveals that the illegal harvesting and trading of Southeast Asian monitor lizards - valued for their skins and as pets - continues.
June 3, 2013
If you made a sphere of all Earth’s water, how big would it be?
Earth is the water planet. What if you could take all of the water on Earth and form it into a sphere? How big would it be?
June 3, 2013
Lesson from Friday’s storm deaths: when weather is bad, stay home
Eight of nine people who died during the May 31, 2013 severe weather event in Oklahoma were in their cars.
June 2, 2013
Strong tornadoes possible in central U.S. May 31, 2013
Severe weather outbreak is likely this evening (May 31, 2013) across the Central Plains. Strong tornadoes, large hail, and flooding likely. Be safe!
May 31, 2013
Increasing CO2 in air is making deserts greener
Scientists call this a "carbon dioxide fertilization effect." It has caused a gradual greening of arid regions on Earth from 1982 to 2010.
May 31, 2013
Genetically-engineered mosquitoes find humans less attractive
Scientists worked with Aedes aegypti, which transmits dengue and yellow fever. Modified mosquitoes showed a reduced preference for humans' smell.
May 30, 2013
As Earth warms, Arctic is warming fastest
The Arctic has been warming about twice as fast as the rest of the globe. A new map from NASA illustrates this uneven warming.
May 29, 2013
