The experiment, simple in its design, took five years to complete.
These suspected caves could be gateways to Mars’ past, and to any future human presence.
“Have you tried turning it off and on again” is really good (if annoying) advice.
Curiously, Neanderthals in France stopped making fire when they needed it most.

Drill cores at the impact site of the Chicxulub asteroid show evidence that, alongside widespread destruction, the collision…
Illustration of the Chicxulub asteroid impact, which took place 66 million years ago MARK GARLICK/Science Photo Library/Getty Images…