Driving just got more expensive for many New York City commuters as congestion pricing was put to its first rush hour test. Supporters argue the plan cuts down on gridlock and greenhouse gas emissions, but critics are fuming about paying another toll. Elijah Westbrook reports.
Engineers from Northwestern University revealed what they called “the world’s smallest pacemaker” on April 2, with the tiny device measuring smaller than a grain of rice.The university said the pacema...