Mars’s surface is not suitable for life because of its low temperatures and constant radiation bombardment, but just a few centimetres of aerogel could fix that
Source:
https://www.newscientist.com/article/2209746-terraforming-mars-with-strange-silica-blanket-could-let-plants-thrive/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home