http://www.columbia.edu/~jeh1/mailings/2011/20110126_SingingInTheRain.pdf
The information he provided at the trail is available at http://www.columbia.edu/~jeh1/mailings/2011/20110126_RatcliffeTestimony.pdfIt provides a succinct summary of some of the evidence regarding both historic and current climate change on the planet.
David Inouye
