Camilla Dominovsky

But more significantly, Iran controls the Strait of Hormuz, and about a fifth of global oil production travels through that choke point.

A blockade would push prices up immediately and dramatically.

And if the conflict expands, there's the risk of attacks on oil infrastructure across the Gulf, which would also cause prices to spike and be hard to reverse.

But those are all risks, not certainties.

In some previous conflicts, both sides were careful to avoid disrupting oil flows.

Energy markets open for trading on Sunday night.

Camilla Dominovsky, NPR News.

Iran itself still produces and exports oil despite U.S.

sanctions.

But more significantly, Iran controls the Strait of Hormuz, and about a fifth of global oil production travels through that choke point.

A blockade would push prices up immediately and dramatically.

And if the conflict expands, there's the risk of attacks on oil infrastructure across the Gulf, which would also cause prices to spike and be hard to reverse.

But those are all risks, not certainties.

In some previous conflicts, both sides were careful to avoid disrupting oil flows.

Energy markets open for trading on Sunday night.

Camilla Dominovsky, NPR News.

Hidden door handles have taken off with many carmakers for reasons both aerodynamic and aesthetic.

But electrically powered handles can't stop working after a crash.

That's caused multiple instances of people trapped inside vehicles during an emergency while those trying to save them are unable to open doors.

Chinese regulators are now requiring vehicles to have mechanically operated door releases both outside and inside the vehicle.