Although I've spent countless hours reading and studying about global warming induced climate change, occasionally it's helpful to go back to the basics and look at an overview. The following is such:
What is climate change?
http://www.bbc.com/news/science-environment-24021772
Six graphics that explain climate change:
http://www.bbc.co.uk/news/resources/idt-5aceb360-8bc3-4741-99f0-2e4f76ca02bb
Articles and short video clips:
http://www.bbc.com/news/science-environment-34320399
A more detailed overview:
http://harvardmagazine.com/node/2399