Madeleine Finlay and Ian Sample discuss three intriguing science stories from the week. From a hint at alien life on a distant planet, to a clue in the search for answers over why colon cancer rates are rising in the under 50’s, and news from a group of scientists who claim to have experienced a colour no one has ever seen before.
Are we alone? New discovery raises hopes of finding alien life
Childhood toxin exposure ‘may be factor in bowel cancer rise in under-50s’
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