States rush to ban food dyes ahead of federal action; NIH cuts funds for studies of vaccine hesitancy; RFK Jr. ridiculed for urging vitamin A for measles; Brain tumors in firefighters show signature of chemical exposure; Unpacking the causes of numbness, tingling and pain in lower extremities; Class-action lawsuit targets Depo-Provera as contributor to meningioma brain tumors; Uncovering the mystery of Trump’s 20+ pound weight loss; Microplastics implicated in spiraling antibiotic resistance.