From 10,000 to 20,000 years ago. The World was in an Ice-Age that obviously 'dried' the moisture out of the atmosphere and gave rise to Australia experiencing its biggest DROUGHT since the introduction of peoples to this continent. It was a drought that most likely turned a peoples here from 'living' to just 'surviving' and pretty sure brought about the 'stagnation' of an age old 'culture' that no longer blossomed.
...with all this ice melting everywhere, sure the World is getting warmer (feels too hot for me in summer

!) and the result is that it is raining more so than ever, with more moisture in the atmosphere.
Kinda fitting really, considering the immense amount of deforestation and vast tracks of lands becoming 'dust bowls' (like Wheat belts, etc) - no wonder '
Gaia'
is trying to rectify the problem and in need of a pretty good drink!
Kinda timely really, considering vast amounts of 'fresh water' have all been used up and depleted around the world as well. As they say in Russia "Bye Bye Lake Baikal"