Why we can't announce life on Mars (yet); The Romans' impact on the British economy; Link between exercise and your microbiome
Episode 320 Was Mars once home to alien life? The evidence is stronger than ever, since NASA’s discovery of rocks marked by patterns similar to those made by microbes on Earth. Found in an area now named Bright Angel, these rocks give us a tantalising insight into Mars’ ancient past - but just how definitive is this…
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