Could Pot Help Us Get to Mars?

Pot might be one of the missing links to getting humans to Mars.by Lester BlackInSight's mechanical bones are fine on Mars. Frail human bones? Not so much. NASA/JPL-Caltech
At around noon Seattle time today an 800-pound robot named InSight will land on the surface of Mars. InSight is loaded with gear to study the geology of Mars, but it’s also a proxy for a much grander future mission: Sending humans to the red planet.
NASA hopes to send a manned mission to Mars sometime in the 2030s (acco