Claim reviews
Some extreme weather events are clearly becoming more common, in contrast to Lord Lawson’s claim
Lord Nigel Lawson in BBC:
"The IPCC, the Intergovernmental Panel on Climate Change, which is sort of the voice of the consensus, concedes that there has been no increase in extreme weather events."
— 10 Aug 2017
Lord Lawson falsely claims that global temperatures have declined over last decade
Lord Nigel Lawson in BBC:
"according, again, to the official figures—during this past 10 years, if anything, mean global temperature, average world temperature, has slightly declined"
— 10 Aug 2017
Earth is not at risk of becoming a hothouse like Venus, as Stephen Hawking claimed
Stephen Hawking in BBC:
"Trump's action could push the Earth over the brink, to become like Venus, with a temperature of two hundred and fifty degrees, and raining sulphuric acid."
— 06 Jul 2017
Energy Secretary Rick Perry incorrectly claims CO2 is not primary cause of climate change
Rick Perry in CNBC:
"Most likely the primary control knob [on climate change] is the ocean waters and this environment that we live in."
— 20 Jun 2017
Breitbart falsely claims 58 studies refute human-caused global warming
James Delingpole in Breitbart:
"'Global warming' is a myth — so say 80 graphs from 58 peer-reviewed scientific papers published in 2017."
— 08 Jun 2017
Natural variability can not explain modern global warming, as Heartland Institute report claims
Craig Idso, Robert Carter, S. Fred Singer in Heartland Institute:
"Neither the rate nor the magnitude of the reported late twentieth century surface warming (1979–2000) lay outside normal natural variability."
— 30 May 2017
A lull in solar activity would have little effect on global temperatures; claims of “global cooling” are not based on science
Craig Idso, Robert Carter, S. Fred Singer in Heartland Institute:
"Forward projections of solar cyclicity imply the next few decades may be marked by global cooling rather than warming, despite continuing CO2 emissions."
— 30 May 2017
Global warming has not “ceased”, as Heartland Institute report falsely claims
Craig Idso, Robert Carter, S. Fred Singer in Heartland Institute:
"global warming ceased around the end of the twentieth century and was followed (since 1997) by 19 years of stable temperature"
— 29 May 2017
CO2 is a greenhouse gas that caused warming during past climate changes, notably as a feedback amplifying other factors
Craig Idso, Robert Carter, S. Fred Singer in Heartland Institute:
"Increases in atmospheric CO2 followed increases in temperature. Therefore, CO2 levels could not have forced temperatures to rise."
— 26 May 2017
Heartland Institute report’s claim that climate models are too sensitive to CO2 does not reflect evidence
Craig Idso, Robert Carter, S. Fred Singer in Heartland Institute:
"[climate models] systematically over-estimate the sensitivity of climate to carbon dioxide ... and modelers exclude forcings and feedbacks that run counter to their mission"
— 23 May 2017