I've been told recently that collecting micrometeorites is as easy, basically, as placing a clean surface outside and picking through the debris you collect because thousands of tons of space dust and debris fall to Earth every day. That can't be all there is to it, can it? How do you know whether you're looking at Earth dust or space dust? [more inside]
posted by Sleeper on Feb 27, 2013 - 4 answers

Is anyone aware of an image that's been generated depicting the whole circle of the earth in section view, showing the topography of the relevant land masses and sea floors? [more inside]
posted by brightghost on Feb 23, 2011 - 15 answers

Is there any way that major fluctuations in the Earth's climate could have an effect on the temperature of the Earth's core? What about its density? Could temperature changes cause some sort of change in the planet's gravity or magnetic fields? Could changing weather have any other effect on the Earth's interior? [more inside]
posted by Captain Cardanthian! on Feb 28, 2010 - 12 answers

Looking for unique schools or programs for the study of History. In the US or abroad. [more inside]
posted by Nillocsoc on Jan 3, 2008 - 13 answers

If Russia gets to claim the North Pole as its own based on geological origins, shouldn't India automatically get Antarctica? [more inside]
posted by riffola on Aug 3, 2007 - 20 answers