http://www.betterhumans.com has a running tally of recent scientific events; there are so many, that it's just a quick paragraph. I check every couple of days to keep up with what's coming out.
http://neo.jpl.nasa.gov/orbits/ is a list of tracked Near Earth asteroids. You can click on the individual asteroids to get a simulation of their orbit. This way, we can determine when ones containing heavy metals are close enough to bump into orbit.
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