A Project of The Annenberg Public Policy Center

FlackCheck Video: Marijuana

This FlackCheck.org video looks at New Jersey Gov. Chris Christie’s claim that marijuana is a “gateway drug.” The video is based on an April 23 report from SciCheck.

The Extreme Weather-Warming Connection

Rep. Lamar Smith made several incorrect claims in a Wall Street Journal opinion piece regarding connections between climate change and severe weather.

Is Marijuana Really a ‘Gateway Drug’?

Though there are correlations between marijuana use and other drugs, there is no conclusive evidence that one actually causes the other. The science on this topic is far from settled.

Santorum and the EPA’s Mercury Rule

Rick Santorum misrepresented the Environmental Protection Agency’s impact analysis of a new agency rule that would reduce power plant emissions of mercury and other toxins.

Cruz on the Global Cooling Myth and Galileo

Sen. Ted Cruz cited a 1975 Newsweek article on “global cooling” to question the evidence of global warming, and in the process made several incorrect and unsubstantiated claims.

Inhofe on Fracking, Water Contamination

Sen. James Inhofe says there has never been “an instance of ground water contamination” caused by hydraulic fracturing — fracking — for oil and natural gas. But drilling operations that involve fracking include other actions that have caused contamination.

Cruz Distorts NASA’s Mission, Budget

During his critique of NASA’s spending on earth and atmospheric sciences at a recent committee hearing, Sen. Ted Cruz made some misleading claims regarding the agency’s budgets and the science that it conducts.

Carson’s Missteps on Sexual Orientation

Ben Carson claimed that being gay is “absolutely” a choice, and as proof he said “a lot of people” go into prison and change their sexual orientation while incarcerated. There is no evidence to support these claims.

Perry Misses Point on Texas CO2 Cuts

Rick Perry said carbon dioxide emissions in Texas were down because of “incentive-based regulation” during his time as governor. But the evidence shows a decline in manufacturing jobs and federal policies are more likely to be the cause of the reduction.