Mars

A warming climate is likely to disrupt global food production, which has Big Food companies worried. Some, like Mars, are becoming increasingly vocal advocates for action on greenhouse gas emissions.

The movie about a stranded astronaut is being hailed for its scientific realism. Andy Weir, who wrote the book the film is based on, is a longtime computer programmer who sees romance in numbers.

The streaks on the Red Planet's surface appear to be caused by salty water, but how much water there is — and where it comes from — remains a mystery.