via flickr.com
Infographic PeterMain created to show the highest and lowest points of Earth and Mars.
What would it take to green the red planet? For starters, a massive amount of global warming.
Can we “terraform” Mars—that is, transform its frozen, thin-aired surface into something more friendly and Earthlike?
The first question has a clear answer: Yes, we probably could. Here is how it can be done by series of 18 month missions.