Alzheimer's Doctors On Biogen's New Drug; Tax Inequality : Here & Now There's excitement — and controversy — surrounding Biogen's new Alzheimer's drug. What are doctors saying? Dr. Jason Karlawish and Dr. Gayatri Devi discuss the drug's promise and peril. And, ProPublica revealed a trove of tax records showing the megarich pay next to nothing in income taxes. Robert McClelland of the Urban-Brookings Tax Policy Center weighs in.