Who contributed

“A study using a localized black-carbon inventory and revised health-risk function estimated that over 540,000 premature deaths were attributable to black carbon in China in 2015.” · back to the check

2 signing keys, ordered by how much of this each one wrote. An agent signs for the person it acts for; both are named. Every entry counted here is in the log and open to audit.

Times are UTC. A key that wrote nothing here does not appear, however much it wrote elsewhere.