may have wiped out much of life on Earth 65 million years ago, but now scientists have discovered how smaller organisms might have survived in the darkness following such a catastrophic impact.
http://esciencenews.com/dictionary/catastrophe
The math looks wonky because of the disparity of the numbers. There are usually two or three airplane crashes each year, but only a couple of hundred people are killed in each one. The odds of an asteroid impact are very low indeed - but if...
http://wiki.answers.com/Q/How_could_the_risk_of_dying_i...
High concentrations of iridium in Upper Pliocene sediments about 2.3 million years old. Estimated size of the impacting object more than 0.5 km.
http://www.barry.warmkessel.com/barry/3related.html
Bad for them, good for us. Source(s): We're all here burning fossil-fuels that was once the dinosaurs.
http://answers.yahoo.com/question/index?qid=20080505190...
At the southern end of Madagascar lie four enormous wedge-shaped sediment deposits, called chevrons, that are composed of material from the ocean floor. Each covers twice the area of Manhattan with sediment as deep as the Chrysler Building ...
http://www.freerepublic.com/tag/madagascar/index
Planetary magnetic fields are created by massive molten metal currents within the planet's core. A flowing current creates a magnetic field, even when the current is massive volumes of charged liquid metal moving under the influence of temp...
http://planetarydefense.blogspot.com/2009/08/article-my...
"Amateur Australian astronomer spots asteroid crash on Jupiter" An amateur 'backyard astronomer' peering through his telescope from his home in rural Australia has spotted a galactic event that Nasa's own star-gazers had missed. A...
http://askville.amazon.com/asteroid-impact-planet-Jupit...