Mars alternated between dry and wetter periods before drying up completely

Data collected by the NASA Curiosity rover, which has been on Mars since 2012, was used by researchers from the Research Institute in Astrophysics and Planetology. https://www.dailymail.co.uk/sciencetech/article-9450265/Mars-alternated-dry-wetter-periods-drying-completely.html?ns_mchannel=rss&ns_campaign=1490&ito=1490