Re: Earth’s Becoming a Greener Greenhouse . . .
Tom, was that a trick comment? As far as I understand it, Erik the Red gave Greenland it's name in order to attract settlers to a place that was not very green at all (first of the land swindlers? Have I got a swamp, I mean lovely waterfront lot for you!) Greenland was green once, but not in human times.
Could we use the same tactics for Mars? "Beautiful recreational lots on the shores of the Red Planet's oceans!" ... and use the proceeds to fund a manned trip.