CAFFEINE!; the Metro-North report; Crimea’s Decision

Coffee: Many of us can't imagine life without it.

Did you know that the caffeine in soda is usually made in China? Murray Carpenter is author of Caffeinated: How Our Daily Habit Helps, Hurts, and Hooks Us and he’ll explain the drug. Plus: what a federal report on the Metro-North crash found about how the rail service was too lax about safety; the latest on the Crimean referendum; and more.