What to read around the web today

• Why Bill Gates' spending on Alzheimer's research is modest. STAT Plus
• Ph.D.–turned–policy insider takes over world’s largest science society. Science
• A woman's grief led to a mental health crisis and a $21,634 hospital bill. NPR
• Veterans want answers as new data shows rise in cancers over two decades of war. McClatchy DC
• Welcome to “Cancer Alley,” where toxic air is about to get worse. ProPublica