Mining asteroids has long been a staple of science fiction. Now an effort is underway to make it a reality, by a company named Planetary Resources. Admittedly, the mining will take some years to actually occur, and the first asteroid will be smaller than 50 meters. And the asteroid won’t actually be from the asteroid field that’s between Mars and Jupiter. But still…. What I find interesting is that this is another example of technology solving our sustainability problems—asteroid mining has the potential to bolster the limited resources we have here on the planet Earth.