Argument: The sun is causing warming on mars just like on earth
- "Climate change hits Mars". The Sunday Times. April 29, 2007 - "Mars is being hit by rapid climate change and it is happening so fast that the red planet could lose its southern ice cap, writes Jonathan Leake. Scientists from Nasa say that Mars has warmed by about 0.5C since the 1970s. This is similar to the warming experienced on Earth over approximately the same period."