A Project of The Annenberg Public Policy Center

Unpacking Pot’s Impact in Colorado

Libertarian presidential candidate Gary Johnson said “marijuana-related” traffic deaths, hospital visits and school suspensions in Colorado have “not significantly” increased since the state legalized the drug. That’s inaccurate.

Clinton’s Trumped Up Zika Claim

Hillary Clinton falsely claimed that “my opponent in this race, his campaign officials” have called Zika “an insignificant issue.” That was said by an unpaid local supporter of Donald Trump. Trump himself has called Zika a “big problem.”

Do Processed Foods Contain GMOs?

A GMO labeling bill signed into law by the president has raised scientific and regulatory questions: Do foods processed from genetically modified organisms, like refined sugar and soybean oil, contain genetic material? If not, would they be labeled as GMOs?

Trump on Torture

Donald Trump said that “enhanced interrogation … works.” But scientists have shown that the stress and pain induced by techniques like waterboarding can impair memory, and, therefore, inhibit a person from recalling information.

GMOs in Organic Food?

In opposition to a controversial GMO labeling bill, a senator falsely claimed, “You could literally have a GMO plant be raised under organic conditions, and I believe because of this bill, it could be certified organic.”

Distorting the Asthma-Ozone Link

A Republican congressman falsely claimed there are “thousands of studies” that refute the Environmental Protection Agency’s conclusion that ground-level ozone, a component of smog, exacerbates asthma attacks.

SciCheck Speaks with WHYY

FactCheck.org’s SciCheck writer, Vanessa Schipani, spoke with WHYY radio host Dave Heller about topics she has covered in recent articles.

Debate Over Gay Blood Donations

Days after the mass shooting at a gay nightclub in Orlando, House members and the White House made seemingly contradictory claims concerning the Federal Drug Administration’s blood donation policy for gay and bisexual men. Both have scientific evidence to back up their claims.

Video: Trump’s Drought Claims

This week CNN’s Jake Tapper takes a look at Donald Trump’s misleading claims about California’s drought and water management issues.

Trump’s Dubious Drought Claims

Donald Trump suggests “there is no drought” in California because the state has “plenty of water.” He promises “to start opening up the water,” and he says he’ll “get it done quick.” But there is a drought, and we explain why there is no “quick” solution.