We explain what’s known about how the catastrophic L.A. wildfires started and the factors that scientists do — and don’t — think contributed.
What We Know About What Led to the L.A. Wildfires
SciCheck
FactCheck.org’s SciCheck feature focuses exclusively on false and misleading scientific claims that are made by partisans to influence public policy. It was launched in January 2015 with a grant from the Stanton Foundation. The foundation was founded by the late Frank Stanton, president of CBS for 25 years, from 1946 to 1971.
Where Trump’s Picks for EPA, Interior and Energy Stand on Climate Change
We reviewed what each of President-elect Donald Trump’s presumptive nominees to lead the Environmental Protection Agency, the Department of the Interior and the Department of Energy have said about climate change and the environment.
Fox News Commentator Had Aggressive Cancer Before COVID-19 Vaccines Were Available
Fox News health commentator Dr. Kelly Powers was diagnosed with glioblastoma, an aggressive form of brain cancer, in July 2020, months before COVID-19 vaccines were made available in the U.S. But social media posts are baselessly linking her death on Dec. 4 to the vaccines. There is no evidence that the vaccines cause or worsen cancer.
Sen. Mullin’s Misleading Vaccine Testing Claim
Sen. Markwayne Mullin’s suggestion that vaccines might cause autism because “there’s not been a direct study on each individual vaccine” misunderstands what’s known about autism, the extensive research on the subject and how science works.
As Trump Taps RFK Jr. for Health Secretary, a Look Back at Kennedy’s Claims
In one of his most controversial Cabinet picks, President-elect Donald Trump said he would nominate Robert F. Kennedy Jr. to lead the Department of Health and Human Services. Here, we summarize our past work fact-checking Kennedy’s claims about health and science.
Trump Embraces RFK Jr.’s Views on Vaccines, Fluoride
In the waning days of his campaign, former President Donald Trump has further embraced some of Robert F. Kennedy Jr.’s incorrect or controversial views on health, including vaccines and fluoride.
Harris vs. Trump on Climate Change
Vice President Kamala Harris and former President Donald Trump have starkly different track records on climate change. To shed light on the two candidates’ climate agendas, we sorted through their campaign materials and recent statements on the campaign trail.
Florida’s 2024-2025 COVID-19 Vaccine Guidance Misunderstands, Distorts Existing Science
An abundance of evidence indicates the mRNA COVID-19 vaccines are remarkably safe and work well to protect against severe disease. But last month, the state of Florida issued updated vaccine guidance advising “against the use” of the shots entirely — even for people who are older and at higher risk of severe disease. Experts say the advice is ill-informed and “illogical.”
Q&A on the 2024-2025 COVID-19 Vaccines
Updated COVID-19 vaccines targeting JN.1-lineage omicron variants of the coronavirus are now available in the U.S. for the fall and winter seasons. Here we answer common questions about the latest vaccines.
Baseless Claims Proliferate on Hurricanes and Weather Modification
Experts say people cannot create or meaningfully alter hurricanes through existing weather modification techniques. That has not stopped a deluge of social media posts baselessly claiming or implying that Hurricanes Helene and Milton were intentionally created, steered or otherwise controlled by someone.