'Recent' Weather on Mars Means... Nothing, Really :(

Mars has weather! Or did, 100 million years ago, which in Mars time is like half of a split fucking second. How did they figure this out? Glaciers!
Super duper high resolution imagery taken a year ago by NASA's Mars Reconnaissance Orbiter provided images like the one above and some pie-throwing Smart Dudes at Brown University have deduced from it that Mars had an active atmosphere as late as 100 million years ago. What does that mean to us space-travel-interested types? It means that:

This evidence of recent activity means the Martian climate may change again and could bolster speculation about whether the Red Planet can, or did, support life.

How... mild.