https://www.economist.com/science-and-technology/2018/07/25/astronomers-have-found-a-lake-on-mars?cid1=cust/ddnew/email/n/n/20180725n/owned/n/n/ddnew/n/n/n/nAP/Daily_Dispatch/email&etear=dailydispatch&utm_source=newsletter&utm_medium=email&utm_campaign=Daily_Dispatch&utm_term=20180725
It’s 20km across and 1.5km beneath the southern polar ice cap
