Uber and NASA

There's worry about whether Uber can contribute to killing the planet. On the other hand, according to NASA, we've got spares.

One disadvantage of the new planet: It's 1.5 billion years older than the Earth, which means it has $\frac{1}{4}$ as much uranium 235 (assuming it started out with the same amount). That might make it harder to jump start a nuclear industry. On the other hand, it means fewer worries about nations run by maniacs.