Every public school student has subjected to endless global warming propaganda during the Clinton, Bush and Obama administrations, but none have seen any warming during their lifetime. April temperatures dropped this year despite the El Nino, and were about the same as 1983. There has been no global warming for 19 years.
Global warming theory is based on tropospheric warming, so NASA ignores the troposphere and instead measures temperatures next to asphalt.
This is what 19 years of global warming looks like. It occurred from 1918 to 1937
This is what 19 years of no warming looks like