Early Mars

"The familiar version goes like this. Early Mars was a warmer world with rivers and lakes and a thick atmosphere."https://spacedaily.com/t-mars-was-once-a-warmer-world-of-rivers-lakes-and-a-thicker-atmosphere-but-after-its-internal-dynamo-died-and-the-planet-lost-the-magnetic-shield-that-helps-protect-an-atmosphere-the-solar-wind-stri/