They were right!
Scientists introduced credible climate change to the world in 1979, but it's taken decades for their message to sink in.
The man who saved the Moon landing
Ultimately, the most famous step in history may never have been taken if it wasn’t for a mission simulation 15 days earlier.
How to survive on the red planet
Donald Trump may want to send people back to the moon, but what about the practicalities of living on Mars?