Viking robots found life on Mars in 1976, scientists say

New analysis of 36-year-old data, resuscitated from printouts, shows that NASA found life on Mars, an international team of mathematicians and scientists conclude in a paper published this week.
Further, NASA doesn’t need a human expedition to Mars to nail down the claim, neuropharmacologist and biologist Joseph Miller, with the University of Southern California’s Keck School of Medicine, told Discovery News.
“The ultimate proof is to take a video of a Martian bacteria. They should send a microscope — watch the bacteria move,” Miller said.
“On the basis of what we’ve done so far, I’d say I’m 99 percent sure there’s life there,” he added.
This seems like it comes up every few years, though the news is exciting, I wish there was 100% concrete irrefutable evidence.