We might have killed the only life we ever found on Mars - Big Think

In one experiment, the Viking landers added water to Martian soil samples. That might have been a very bad idea.

Life just might exist on Mars after all

We Might Have Accidentally Killed the Only Life We Ever Found on Mars Nearly 50 Years Ago - JSTOR Daily

Alien life was found on Mars 50 years ago - but NASA accidentally KILLED it, scientist claims

NASA may have unknowingly found and killed alien life on Mars 50 years ago, scientist claims

We might have accidentally killed the only life we ever found on Mars nearly 50 years ago

15 Martian objects that aren't what they seem

We might have killed the only life we ever found on Mars - Big Think

Nasa found alien life on Mars then killed it, scientist claims, Tech News

Mars Conceals a Radioactive Sea of Magma Under Its Surface - The New York Times

Could Humans Visit Venus?