The report said "All in all, if water vapor can regularly float so high into the
Martian atmosphere without being limited by condensation, "we might envision that water escape on Mars has been more way more effective than previously thought," Montmessin said. Future research can better quantify how much water is entering the upper atmosphere and model its behavior, so scientists can better understand how the water vapor may escape into space, Montmessin said."
My observation - Very intriguing report here on Mars losing water. 4 billion years ago, Mars is said to be warm and wet yet there is that Faint Young Sun. 2 billion years ago or so for Earth, that Faint Young Sun is said to have created the *snow ball* Earth
Future studies should be very interesting.