The Sun cannot explain recent global warming, contrary to what Heartland Institute report claims

CLAIM
Solar forcings are not too small to explain twentieth century warming. In fact, their effect could be equal to or greater than the effect of CO2 in the atmosphere.

SOURCE: Craig Idso, Robert Carter, S. Fred Singer, Heartland Institute

Published: 03 May 2017

VERDICT

Climate sensitivity estimate given in Heartland Institute’s report is misleading

CLAIM
Doubling the concentration of atmospheric CO2 from its pre-industrial level, in the absence of other forcings and feedbacks, would likely cause a warming of ~0.3°C to 1.1°C

SOURCE: Craig Idso, Robert Carter and S. Fred Singer, Heartland Institute

Published: 02 May 2017

VERDICT

In CNN interview, William Happer incorrectly claims temperatures don’t match climate model projections

CLAIM
The temperature is not rising nearly as fast as the alarmist computer models predicted. You know, it’s much, much less, factors of 2 or 3 less.

SOURCE: William Happer, CNN

Published: 25 Apr 2017

VERDICT

In CNN interview, William Happer misleads about the impact of rising carbon dioxide on plant life

CLAIM
there's this myth that's developed around carbon dioxide that it's a pollutant […] Carbon dioxide is a perfectly natural gas, it’s just like water vapor, it’s something that plants love.

SOURCE: William Happer, CNN

Published: 25 Apr 2017

VERDICT

Boston Globe column claims that climate models have consistently failed based on no evidence

CLAIM
Climate projections using models based on it [the water vapor feedback] have consistently failed

SOURCE: Jeff Jacoby, Boston Globe

Published: 16 Mar 2017

VERDICT

Claim in New Scientist that humans are responsible for over 100% of warming is mostly correct

CLAIM
more than 100 per cent of the warming over the past century is due to human actions

SOURCE: Michael Le Page, New Scientist

Published: 11 Mar 2017

VERDICT

Science shows that humans are primarily responsible for climate change, counter to EPA Administrator Scott Pruitt’s claim

CLAIM
I would not agree that [carbon dioxide is] a primary contributor to the global warming that we see.

SOURCE: EPA Administrator Scott Pruitt, CNBC

Published: 10 Mar 2017

VERDICT

The world’s coral reefs are severely threatened by climate change and other human impacts, as ABC story notes

CLAIM
90 per cent of the world's coral reefs will disappear in the next 35 years due to coral bleaching induced by global warming, pollution and over-development.

SOURCE: Greg Hassall & Rebecca Latham, ABC News

Published: 27 Feb 2017

VERDICT

Daily Mail inflates data handling disagreement between scientists; makes unsupported “manipulation” accusation

CLAIM
world leaders were duped into investing billions over manipulated global warming data

SOURCE: David Rose, Daily Mail

Published: 06 Feb 2017

VERDICT

The Wall Street Journal fails to acknowledge that 2016 was the warmest year on record

CLAIM
no one really knows if last year (2016) was a (global temperature) record

SOURCE: Wall Street Journal editorial, The Wall Street Journal

Published: 27 Jan 2017

VERDICT