Five years after the Columbia tragedy, American space exploration is still struggling to lift off: NASA veterans are questioning the new moon plan, presidential candidates are lining up new policies, and there's a satellite crashing toward Earth. Aerospace engineer and Transterrestrial Musings blogger Rand Simberg joins us with some new solutions for teaming up with the private space industry. Plus, Glenn Reynolds takes a DIY clinical trial of new anti-aging drugs, GM's favorite new startup tells us how to make cheap ethanol and the geek behind the telestrator revs up for the big game--with new touchscreen interfaces.