Something which has interested me for awhile is Mars, especially Mars in 10 years. According to Elon Musk, SpaceX will have taken people into Mars's orbit by 2025. A thought which was unimaginable 10 years ago, but a reality. But how will we able to inhabit Mars, is it possible?
How To Inhabit Mars
To inhabit Mars will not be a piece of cake, quite the opposite. However, a few vital components already exist on Mars. One thing which we need to survive is water which exists on Mars in frozen form. Mars's soil is actually 60 % frozen water. This a huge step in the right direction. The water will provide drinking water and for plants which are the second difficulty.
Food is essential for human survival and therefore a key component as well if we are going to inhabit Mars. However, to grow food on Mars is a hard task with the surrounding environment Mars provides. With an atmosphere 100 times worst than Earth gene modification has to happen. In the beginning though, greenhouses can be built.
The next step would be to make Mars, Earth 2.0. Terraforming Mars is a couple of "years" away. Nonetheless, the procedure will take place in Mars's orbit with a solar sail gazing on the poles of Mars, heating up the carbon dioxide. This will eventually transform into a atmosphere which will be resistant against radiation. However, to oxidize Mars if far fetched and this will most likely never occur.