Democrats in the Senate were facing an uphill climb Wednesday in their push to restrain President Trump's ability to wage war against Iran.

The effective closure of the Strait of Hormuz is "about as wrong as things could go" for global oil markets. Iran achieved it not with a naval blockade, but with cheap drones.

A Texas biotech company is trying to bring mammoths and other extinct creatures back to life. The science is as intriguing as the ethical questions are thorny.