Atmosphere of Mars

"The current atmosphere of Mars is too cold and thin to support liquid water, an essential ingredient for life, on its surface for lengthy periods."https://www.nasa.gov/solar-system/nasa-new-study-on-why-mars-is-red-supports-potentially-habitable-past/?utm_source=join1440&utm_medium=email&utm_placement=newsletter&user_id=66c4c92f5d78644b3ac5d5b4