The Carbon Clue: What Perseverance's Record-Breaking Organic Discovery Really Tells Us About Life on Mars
NASA's Perseverance rover just found the highest concentration of complex organic molecules ever detected on Mars — in a dried-up riverbed that once flowed with water. But does the discovery prove ancient life existed, or is something else going on? Here's what the new science actually says.

The Big Idea
Here's what you need to know up front: NASA's Perseverance rover just found the single biggest haul of complex organic molecules ever sniffed out on Mars — hundreds of individual detections baked into mudstones that formed billions of years ago in what used to be a lake. The finding, published Wednesday in the journal Science Advances, is genuine cause for excitement. But it's also the kind of discovery that raises at least as many questions as it answers, and the science team...