NASA climate scientists are in 100% agreement on global climate change because they have tremendous data, over time, from temperature imaging. Not even individual data points. In the way that an infra-red camera can see temperature through walls, or night vision goggles can see at night - NASA can look at temperature (and X-rays, Gamma rays...etc).
Here is the data between 2001 and 2011. In the context of the period of time between 1950 and 1980 where temperature changed .6 degrees.
http://data.giss.nasa.gov/
Here is a video of NASA data on ice retreating in Greenland. Look on a map for the location of Greenland. You will see it is in a zone where temperature went up 4 degrees.
http://youtu.be/uyXQWimVrfw
Note the areas over Russia where temperature over the last decade increased by 4 degrees.
2011 and 2010 looked about the same for Russia during the summers. The most extreme heat wave in over 1000 years.
Russia, previously a climate change skeptic (who happens to have massive amounts of oil they want to make money from) has now leapt to a leadership role in changing their impact on the environment and persuading others to work to prevent climate change.
Here is a Discovery News story. Look at the satellite images of the smoke. Watch the video in full screen and see if you can get a feel for why they might have changed their tune.
http://news.discovery.com/earth/russian-fires-heat-waves-and-a-drive-through-hell-video.html
You can search the temperature imaging data here by setting your own conditions/data criteria.
http://data.giss.nasa.gov/gistemp/maps/
The environmental protection agency has this tool for you to calculate your own emissions and ideas for things you can adjust.
http://www.epa.gov/climatechange/emissions/ind_calculator.html
For a complete set of all the data GISS puts out go here.
http://data.giss.nasa.gov/
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