Finding Blood Clots Before They Wreak Havoc
CAMBRIDGE, Mass.-Life-threatening blood clots can form in anyone who sits on a plane for a long time, is confined to bed while recovering from surgery, or takes certain medications.
Water and Lava, but — Curiously — No Explosion
BUFFALO, N.Y. — Rocky pillars dotting Iceland’s Skaelingar valley were projectiles tossed into the fields by warring trolls.
Dawn Reality-Checks Telescope Studies of Asteroids
Tantalized by images from NASA's Hubble Space Telescope and ground-based data, scientists thought the giant asteroid Vesta deserved a closer look. They got a chance to do that in 2011 and 2012, when NASA's Dawn spacecraft orbited the giant asteroid, and they were able to check earlier conclusions.
Earth's History to be Rewritten
Until now, science has believed that oxygen in the Earth's atmosphere has been around for roughly 2.3 billion years, or roughly half way back along our planet's 4.6 billion year timeline. However, new research results provide evidence that the dating of a so-called “Great Oxygenation Event†needs a 700- million-year backwards recalibration.