Mars is topical at the moment. In response I looked at the feasibility of building a self-sustaining human colony on the Red Planet. See my article featured on Astronaut.com, a website where Science Fiction meets Science Fact.
A great website with lots to offer. As a guest blogger I have an article: Developing an off planet mining industry, which looks at the increasing pressure on Earth’s natural resources, and the economic pressure driving private industry’s race to gather the bounty of space.