Nasa scientists say we may be close to finding evidence of some form of life on Mars. But what does this mean for us on planet Earth?
Redi Tlhabi spoke to The Naked Scientist, Chris Smith, about the latest discovery which has heightened our curiosity about extraterrestrial life.
Smith also answered listeners' questions about any science subject under the sun.
Listen to the conversation below:
This article first appeared on 702 : The Naked Scientist demistifies Nasa's water discovery on Mars