Science writer David Baron explores the initial interest in whether there was life on Mars in his latest book, "The Martians: ...

While the headline-making sample from Perseverance’s drill in Jezero Crater may show tantalising biosignature-like features, the first issue is lack of definitive proof: the features could still be ...

NASA’s report of potential signs of ancient life on Mars has reignited a long-running scientific debate about how common life may be in the universe. A leading scholar on habitable star systems said ...