The contrarian propaganda says that global warming has ceased since about the turn of the century, that our planet is no longer warming, so climate change theories must be wrong. Arguments supporting this propaganda are misleading and wrong. It may not appear so, but it is. What I have assembled below is however, is not difficult at all to understand.
We have been setting global high temperature records regularly for most of this century. The exception is the 50s, 60s and 70s. during this period, particulate and sulfate pollution from rapid industrialization after WWII caused a temporary slump in the regularity of new global high temperature records. In 1970 the Clean Air Act put an end to the pollution and the thermometer started to rise again. The following is the list of dates of successive global high temperature records: 2005, 1998, 1997, 1990, 1988, 1981, 1944, 1938, 1931, 1926, and 1900 1897, 1889 and 1881. If anything, the rate of record setting has sped up.
You can also tell these people "Man really did land on the moon, it was not a hoax."