If you can’t pin down why something’s happening, you don’t have much hope of fixing it.

© Evelyn Hockstein/Reuters

Mr. Buffett, 71, is succeeding his father, Warren, but will not be running the company’s day-to-day operations.

© Volodymyr Tarasov/Ukrinform/Sipa USA, via Reuters

The Federal Reserve is trying to catch up with the leap in bond rates as the Middle East conflict unnerves world markets.

© Ellie Foreman-Peck