Here are a few of the resources that went into this book. Some scientific background is helpful in understanding the main issues. I did a lot more reading than this, but these sites should be a useful start. 

• The premier site for climate change discussion (with a focus on debunking myths and contrarian positions): realclimate.org
• Here's a site with a lot of discussion from the starting point of debunking contrarian arguments: A Few things Ill Considered
  
• Here are some contrarian sites:
• Roger Pielke Sr. maintains one of the better contrarian sites, mainly focused on the science, and with little tolerance for ad hominem attack
• Junk Science attempts to debunk climate change. For example they are running a contest with a prize at time of writing of $150,000 to anyone who can conclusively prove according to their definition that global warming is real. See the Carl Wunsch interview mentioned below for an opinion on demanding conclusive proof (a contest offering a prize of to conclusively debunk global warming makes just as much scientific sense and will also never be claimed)
  
• CO2 Science, the web site of the Center for the Study of Carbon Dioxide and Global Change, looks more scientific in its approach than Junk Science but nonetheless focuses on data discrediting the mainstream science
  
• Contrarians are sometimes genuine sceptics. However, there is evidence of fossil fuel funding for a campaign to discredit the mainstream. See Exxon Secrets for example: search the site for organizations such as Center for the Study of Carbon Dioxide and Global Change
• Was The Great Global Warming Swindle so bad? Here's an interview with Carl Wunsch, who appeared in the original version, but was cut after complaining about being misrepresented. This interview was one of the triggers for the research that went into this book.
  
• Some NASA sites:
• NASA Goddard Institute for Space Studies (GISS)
• NASA GISS publications (a useful site to pick up many papers that would otherwise be hidden behind expensive subscriptions or pay per view sites)
  
• The NASA site used to generate the back cover image: the GISS surface temperature analysis page (GISStemp)
• The actual page for generating maps showing temperature trends and anomalies: Global Maps from GHCN Data
• Picture of the Earth at night (actually a composite, to get each part of the earth at approximately the same time) – November 2000. This picture is what I used as my source in the book where I refer to a map illustrating "population densities" in the NASA chapter (the density of lighting is not exactly population density but a good proxy)
  
• Earth fact sheet (data like the size of the atmosphere)
  
• British Antarctic Survey (BAS) – BAS is one of the premier Antarctic research agencies; some specific things to look for:
  
• Antarctic temperature data
• BAS scientific reports (not as many specific to climate change as GISS publications)
  
• Something not mentioned in the book but a growing concern – acidification (more properly, reduced alkalinity) of the oceans:
• Early study by the Royal Society, 2004
  
• Warning of threat to marine life, National Center for Atmospheric Research, Colorado, 2006
• Orr et al. Anthropogenic ocean acidification over the twenty-first century and its impact on calcifying organisms, Nature vol. 437 29 September 2005, pp 681-686
  
• I read newspaper articles with caution; with this caveat in mind, the New York Times has a site collecting its news and articles on the matter
  
• The author's opinions on a range of matters: the Opinion-Nation blog
• The author's YouTubes 

And for those who would like to make eggless pasta, here's a recipe (tested for the book; I just left out the salt). As reported in the book, dusting the dough with flour stops it from sticking in the machine. The filling as described in the book is good. No one complained when I served it.