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Today science: Mount Everest without supplemental oxygen
Here's why climbers use supplemental oxygen to climb Mount Everest. Also, the curtailment of the 2014 Everest climbing season following a deadly avalanche.
May 8, 2014
Rapid growth spurts formed vast and beautiful Altiplano plateau
The vast Altiplano plateau in the South American Andes Mountains formed not gradually, but through rapid growth spurts, a new geological study suggests.
May 7, 2014
Ancient Peruvian culture predating Nazcas used desert lines to guide people to solstice festivities
The Paracas immediately preceded another culture called the Nazca, which is famous for making massive line drawings in the Peruvian desert.
May 6, 2014
U.S. Northeast already hit by climate change, says major report
New U.S. government report on climate change - first in five years - due out May 6. It outlines ongoing effects of a warming climate in the U.S. Northeast.
May 5, 2014
Magma rising inside Mount St. Helens, but no eruption expected
There has been uplift and minor earthquake activity on Mount St. Helens, an active volcano in Washington state, but there are no signs that it is about to erupt.
May 5, 2014
Bloated dead whale might explode in Newfoundland town
A bloated carcass of a blue whale that washed ashore near the town's boardwalk could explode at any time, residents fear.
May 2, 2014
Incredible video shows April 30 landslide in Baltimore devouring cars
This video shows happened in Baltimore's busy Charles Village neighborhood Wednesday, when a retaining wall buckled and sent cars and mud tumbling onto railroad tracks below.
May 2, 2014
View from space: Arkansas tornado track
A violent tornado touched down in Arkansas on April 27, 2014, killing as many as 15 people. In an April 28 satellite image, you can see the tornado's track. Compare it to a satellite image of the same area taken before the tornado.
April 30, 2014
Video: How tsunamis work
This 3-minute video explains what causes towering and treacherous tsunamis.
April 30, 2014
Photos and videos of U.S. tornadoes April 27-29, 2014
Photos and videos from the devastating storms killed at least a dozen people, and possibly many times that number, in the U.S. Central Plains and Southeast in recent days.
April 30, 2014
