Back in December 2021, Science Feedback conducted a quick check on the extent to which Google’s then-new policy on demonetizing climate change denial content was enforced. Our study focused on videos published on Youtube. We first found that Google’s policy was too narrow: about half of the videos that scientistsContinue Reading


There are some aspects of climate science that are clear-cut. It is, for instance, “unequivocal that human influence has warmed the atmosphere, ocean and land,” according to the Intergovernmental Panel on Climate Change.[1] As human activities emit greenhouse gases into the atmosphere, those greenhouse gas concentrations have increased, causing globalContinue Reading


image credit The Johns Hopkins Bloomberg School of Publich Health SUMMARY In August 2022, the U.S. Food and Drug Administration (FDA) authorized bivalent COVID-19 vaccine formulations as single booster doses. These bivalent formulations contain messenger RNA (mRNA) from the original SARS-CoV-2 strain and mRNA present in the BA.4 and BA.5Continue Reading


In the early days of the COVID-19 pandemic, long before vaccines became available, many countries acted to curb the spread of the virus by imposing restrictions on people’s movement called lockdowns. Lockdowns have saved lives by reducing the physical interactions between infected and uninfected people, which in turn reduces transmissionContinue Reading


1.5 is an important number in climate science. It is the recommended target, in degrees Celsius, to which global warming should be limited relative to preindustrial levels, according to the Intergovernmental Panel on Climate Change (IPCC), the world’s leading authority on climate science[1]. Further, the legally binding Paris Agreement tasksContinue Reading


Key results 1. A study of 490 “misinformation superspreaders” (here defined as accounts that have repeatedly published popular tweets linking to known misinformation) shows that their collective popularity has significantly grown (on average, +42% interactions per tweet) since Elon Musk took effective control of the platform on 27 October 2022.Continue Reading


Anatomy of an anti-vax fact-check: Consider the Source, Check the Site, Confirm the Content. Who made the claim, who published it, where’s the evidence?Continue Reading