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.

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

Bill Nye and the “Closed System” Quote –

What science says about having babies in space

Is life possible on Mars? - Big Think

Mars - Wikipedia

How Mars Will Be Policed - The Atlantic

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

The 5 Possibilities For Life On Mars

Could Humans Visit Venus?

Humanity had already discovered ``creatures on Mars'' but may have accidentally killed them - GIGAZINE