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Economists are working on ways to put a price on the environmental damage of growing food. Take sugar: Half of what we eat comes from beets, half from cane. Each has an impact, in very different ways.

Millions of people want caffeine removed from their coffee. Millions more want caffeine added to their soda. Little-known caffeine factories, scattered across the world, satisfy both desires.

Whatever Congress might come up with would certainly be controversial — and this is an election year. That hasn't stopped some lawmakers from taking sides in the privacy vs. national security debate.

The Texas senator has largely been out of the headlines after his third-place showing in New Hampshire. But that was not a bad finish for him, and now the calendar is shaping up better for him.

The Alabama Crimson Tide take on the Clemson Tigers in tomorrow's college national championship football game. It's the second year for a new playoff system in college football.

Hospitals have been fighting to block the rankings, but Medicare released them Wednesday. Of the 102 hospitals that got a five-star rating, few are among those generally praised for great care.

California regulators say autonomous cars should have a licensed driver, but a top Google engineer says that makes as much sense as putting a steering wheel or brake pedal in the back of a cab.

The metric of sheer page views only goes so far. We wanted to see which posts resonated enough with people that a high rate of readers shared them with friends and followers.

Three years after bariatic surgery, most people experienced health improvements. Yet some people benefited much more than others. Figuring out those differences would help doctors and patients understand who should have surgery and who should avoid it.

In the 1940s, recording engineers perfected new sound techniques that were used in World War II — and which launched a hi-fi revolution. Lloyd Schwartz reviews the new 53-CD Decca box set.