Iran's Islamic Revolutionary Guard Corps says two oil tankers struck mines and caught fire in the Strait of Hormuz.

The University of Cambridge and a university spinout said an AI-designed candidate broad-spectrum avian influenza vaccine protected animals against multiple genetically distinct strains in preclinical studies. Researchers analysed global surveillance sequence data with AI to design “super-antigens” that capture conserved viral features, screened candidates in cells, then tested the selected immunogen in mice and ferrets. All vaccinated animals survived challenge with several strains that have previously infected humans; a comparison group given an existing avian influenza vaccine had roughly 50% survival. Lead researcher Jonathan Heeney said the candidate aims to offer broad protection against evolving avian influenza viruses and that AI substantially accelerates vaccine design.

Berkshire Hathaway (BRK.A, BRK.B) repurchased shares in Q4 totaling the equivalent of about 2,554 Class A shares as of Oct. 28.