Mars meteorite found in drawer reveals history of water on Red Planet 

 "We think the water came from the melting of nearby sub-surface ice called permafrost, and that the permafrost melting was caused by magmatic activity that still occurs periodically on Mars to the present day." 

https://cdn.mos.cms.futurecdn.net/TknxdDJRL6w2yFgsEpshPT.jpg

https://www.space.com/the-universe/mars/mars-meteorite-found-in-drawer-reveals-history-of-water-on-red-planet