Modern Climate Change: Evidence
These sources scratch the surface of the vast interdisciplinary body of knowledge that indicates we are living in a time of artificially "enhanced" climate change.
Michael Mann & Lee Kump, Dire Predictions (2008): Acessible, graphic-rich overview book subtitled "Illustrated guide to the findings of the IPCC."
John Houghton, Global Warming, 3rd. ed. (2004): Climate change "textbook" that is more complete and more challenging than Mann & Kump, but not as current.
Dangerous Human-Made Interference With Climate (Hansen & many others, 2007): Formal scientific recognition of human fingerprints on recent climate change.
Attributing Physical and Biological Impacts
to Anthropogenic Climate Change, Nature 2008 (Rosenzweig et al. 2008): I've linked to the abstract, but I can't legally post the PDF.
The (in)famous "hockey stick" graph of global temperature (Union of Concerned Scientists)
CO2 trends at Mauna Loa: Current and historical records (NOAA)
Methane North and South: Brief RealClimate post on the recent rise of atmospheric methane after a decade-long plateau (Aug 2009).
Hansen's "Trial of the Century" (mock trial of CO2 and other GHGs)
Climate Change Index: When presented in Dow Jones-like fashion, measurements of climate change inexorably rise.
Hemispheres: The 1940-1970 "cooling" affected the northern hemisphere, but not the southern, supporting the idea that man-made aerosols were responsible.
Retreat of mountain glaciers in Andes and elsewhere (click video & media images at right)
Detailed, informative discussion of the retreat of tropical mountain glaciers, including the manufactured controversy involving Kilimanjaro (RealClimate).
Economic impacts of retreating Andean glaciers (Vergara et al., EOS 2007).
Animation showing Arctic sea-ice coverage, 1860 to 2100 (Royal Meteorological Office)
Examination of deterioration of ice shelves in Greenland and Antarctica (RealClimate, Dec 2008). Fairly detailed, but quite accessible to non-experts.
Antarctica glacier passes
its tipping point: Melting of the Pine Island glacier has passed a threshold and is primed for collapse (akin to the ice shelves) (New Scientist, Jan 2010).