The European Medicines Agency (EMA) today revealed that some of the Pfizer/BioNTech COVID-19 vaccine data stolen from its servers in December was leaked online.

Severe allergy-like reactions in at least eight people who received the COVID-19 vaccine produced by Pfizer and BioNTech over the past 2 weeks may be due to a compound in the packaging of the messenger RNA (mRNA) that forms the vaccine’s main ingredient, scientists say. A similar mRNA vaccine developed by Moderna, which was authorized for emergency use in the United States on Friday, also contains the compound, polyethylene glycol (PEG).

Why do people believe in conspiracy theories? Michael Shermer, a famous skeptic, was forced to admit that one of the reasons is that some of them are true. In his research he found that the fact that some conspiracy theories are real feeds people’s suspicion and makes them susceptible to the belief in others that are far less credible.

The Food and Drug Administration authorized Pfizer’s Covid-19 vaccine for emergency use on Friday, clearing the way for millions of highly vulnerable people to begin receiving the vaccine within days. The authorization is a historic turning point in a pandemic that has taken more than 290,000 lives in the United States. With the decision, the United States becomes the sixth country — in addition to Britain, Bahrain, Canada, Saudi Arabia and Mexico — to clear the vaccine. Other authorizations, including by the European Union, are expected within weeks.

People beat artificial intelligence hands-down at puzzling out new ways to fold molecules for a potential SARS-Cov-2 immunization. Thousands more players are needed.