Scientists are scouring the Universe for Earth-like planets, suitable for humans to settle. However, these new worlds are highly unlikely to be identical to our own planet. Their climate, their geology and their atmospheres could all be different. So, how can we find crops and plants that will grow on these alien worlds?
Christophe Galfard discovers the solution might already exist.
The Most Important Room on Earth
Stephen Hawking's
The Search For A New Earth
1 x 90 min, Brook Lapping for BBC