Human trials on Earth are the key to how we will survive on Mars

Life on Earth has its challenges but what about life on Mars?

Can humans ever survive on our neighbouring red planet, fourth from the sun?

To help answer that, an international crew of six people spent a year living inside a solar-powered dome on the slopes of Hawaii’s Mauna Loa volcano.

The place is starkly red-brown, dramatically rocky, barren of plant life – a lot like Mars…