Safety+ Symposium will bring together safety and health professionals for four days of training, networking, and celebration Aug. 11-14 in St. Louis.

“The ordering of the operations ‘putting shoes on’ and ‘putting socks on’ therefore matters,” Schwichtenberg had written, meaning that “the two operations do not commute.” Empirically verifiable, ...

Time-lapse of Space Shuttle Endeavour stacked with an external tank and pair of solid rocket boosters for a exhibit at the California Science Center. Credit: California Science Center | time-lapse by ...