“A rapidly growing share of the global population lives in cities. When mayors succeed, millions of lives improve.”

We have a saying here at Bloomberg, and it’s one we brought with us to New York City Hall: “If you can’t measure it, you can’t manage it.” The federal government is now in danger of proving just how much truth those words hold.

From an economic perspective, the tunnel is an absolute no-brainer — and it’s long overdue.

The peace “plan” the US is pressuring Ukraine to sign may be improving after talks in Geneva over the weekend, which would be good news.

Instead of bringing out the best in America, as tragedies once did, it is bringing out the worst — in both parties.

Military personnel are often blocked from repairing their own equipment due to manufacturer restrictions. In wartime, that could be fatal.

In sizing up the field in the race for mayor, there is one candidate whose management experience and government know-how stand above the others: Andrew Cuomo.

The world will deeply miss his moral leadership and universal vision.

Congress should be alarmed by the CBO’s new debt projections. Instead, it’s aiming for bigger budget deficits.

Mass transit is the lifeblood of a city. Improving it for the workers in the nation’s economic capital benefits all Americans.