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What the Curiosity rover has told us about Mars and it's Earth-like past.
Analysis of rock sample from the planet Mars reveals elements such as hydrogen, carbon, and oxygen, according to NASA.
Carbon is building block of life, though rover's discovery does not prove that life existed on Red Planet.
The media was too quick to infer the existence of organics on Mars simply due to the excitement of one scientist.
The latest evidence came from photos that rover Curiosity took revealing rounded pebbles and gravel.
NASA releases more spectacular pictures and audio from planet, likening it to Neil Armstrong's landmark lunar landing.
Featured on Al Jazeera
Your chance to be an investigative journalist in Al Jazeera’s new interactive game.
An innovative rehabilitation programme offers Danish fighters in Syria an escape route and help without prosecution.
Street tension between radical Muslims and Holland's hard right rises, as Islamic State anxiety grows.
Take an immersive look at the challenges facing the war-torn country as US troops begin their withdrawal.
 
 
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