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- 1Secret Cold War bioweapons test exposed millions in Bay Area●The secret Cold War bioweapons test that exposed millions in the Bay Area
A newly detailed account revisits the 1950 Operation Sea-Spray, in which the US Navy sprayed Serratia marcescens bacteria over San Francisco from ships offshore to study how a biological attack might spread. The tests exposed an estimated 800,000 residents to the bacteria without their knowledge, and have since been linked to infections and at least one death. Readers are debating the ethics of secret government experiments on civilians and what accountability, if any, followed.
- 2Bacteria on coral reef fish gills carry chemosynthesis genes●DNA reveals chemosynthesis genes in bacteria living on coral reef fish gills
Researchers have found that bacteria living on the gills of coral reef fish carry genes for chemosynthesis, meaning they may be able to produce energy from chemicals rather than light. The discovery, reported by Phys.org, suggests fish gills could host microbial communities with an unusual metabolism, expanding what scientists know about where chemosynthetic microbes live.