Abundant ice on Mars: Deep buried glaciers discovered on the Red Planet

Buried glaciers have been spotted on Mars, offering new hints about how much water may be accessible on the Red Planet and where it is located. Although ice has long been known to exist on Mars, a better understanding of its depth and location could be vital to future human explorers. Who knows whats in that ice? Microbes? Bacteria? Stuff that could wipe out humanity? The former residents of Mars?