Archive: 04/13/2009

NASA Heads up Mt. Everest

Steve "Ark" Vander Ark takes a deep breath at the foot of the stairs in a lonely, dusky stairwell, then turns and heads up ten long flights of steps - for the eighth time. He'll repeat this ritual thrice more, ...

Apr 13, 2009 5 / 5 (4) 0

Earthquake waves: How do they spread?

Propagation of earthquake waves within the Earth is not uniform. Experiments indicate that the velocity of shear waves (s-waves) in Earth’s lower mantle between 660 and 2900 km depth is strongly dependent on the orientation ...

Apr 13, 2009 3.7 / 5 (3) 0

Congress joins Twitter craze

This is what you get when politicians keep their comments to 140 characters or less: "We need to cut spending! Holy Cow! A novel idea in Washington."

Apr 13, 2009 not rated yet 1