user门户

Wildfire smoke PM2.5 is linked to ~24,100 deaths annually in the U.S., a 2026 study reports. Researchers found even small increases (0.1 µg/m³) raise mortality risk, with no safe exposure level identified, highlighting a growing public health threat as wildfire seasons intensify.

2026年3月6日 · 张伟 · 来源：user门户