claim: The latest  measurements involve the use of satellite gravimetry, estimating  the mass of terrain beneath by detecting slight changes in gravity as a  satellite passes overhead.
evidence: Regrettably, this creates the impression that scientific opinion is evenly divided or completely unsettled" Begley 2007: "polls found that 64 percent of Americans thought there was 'a lot' of scientific disagreement on climate change; only one third thought planetary warming was "mainly caused by things people do."