Napoleon, like Musk, was a genuine genius who won repeatedly by defying expectations. Success bred a sense of invincibility. The march on Moscow foll… - Robert Zubrin

Napoleon, like Musk, was a genuine genius who won repeatedly by defying expectations. Success bred a sense of invincibility. The march on Moscow followed, not from necessity, but from overconfidence, and it ended in catastrophe.

Global warming and anthropogenic atmospheric chemistry change are both real. They are not currently a crisis. But they are going to become a crisis, and then a disaster, unless something is done to effectively change the current trajectory of events.

According to advocates, such as Princeton professor Gerard O'Neill, such commerce could then provide the economic foundation for the development of large colonies, literally cities in space, in high Earth orbits, and this vision has served to motivate many space entrepreneurs, notably Blue Origin founder Jeff Bezos.

The evidence from our orbital images shows that there was liquid water on the surface of Mars for about a billion years of the planet's early history, a span roughly ten times as long as it took for life to appear in the Earth's fossil record after there was liquid water here.