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Nasa has revealed the latest results from its Curiosity rover gathering samples from the surface of Mars.
The US space agency announced Mars has the building blocks of life, in a discovery that could suggest the red planet was once inhabited - or even still is today.
Three different types of organic molecules were discovered when the rover dug just 2 inches (5 cm) into roughly 3.5 billion-year-old mudstone, a fine-grained sedimentary rock, at Gale crater, apparently the site of a large lake when ancient Mars was warmer and wetter than the desolate planet it is today.