Soldiers need to be able to communicate on a noisy, dangerous battlefield even when conventional means of communication are unavailable.
To help meet that need, the US Army has just updated its compilation of hand and flag signals.
One configuration of flags signifies “Chemical, biological, radiological, and nuclear hazard present”:

Or a soldier may need to signal “I do not understand,” as follows:

See Visual Signals for Armor Fighting Vehicles (Combined Arms), GTA 17-02-019, US Army, February 2018.
Most patient safety challenges are not really captured and there are not enough tools to empower clinicians to improve. Here are four proposals for improving patient safety that are worthy of attention and action.
The Trump administration has often cited consolidation as a path to efficiency. But history shows that USDA reorganizations have weakened, not strengthened, the agency’s capacity.
Grace Wickerson, the Federation of American Scientists’ Senior Manager, Climate and Health, today accepted a national recognition, the “Grist 50” award, bestowed by the editorial board of Grist, a nonprofit, independent media organization.
The bootcamp brought more than two dozen next-generation open-source practitioners from across the United States to Washington DC, where they participated in interactive modules, group discussions, and hands-on sleuthing.