After Columbine, teens weren't taking to the streets to call for more gun regulations. So what's changed?

A scholar documented the risks a migrant faced after deportation, including his becoming involved in smuggling people across the border.

Exactly 234,966 people have died in Mexico's 11-year drug war. Now the government wants to deploy soldiers to criminal hot spots, a move many fear will just increase violence and weaken the police.

There's a common, popular and well-studied method to ensure new technologies are safe and effective for public use – even if researchers don't fully understand how they work.

Pharmaceutical companies focus on small molecules they've devised – and can easily patent. But nature's already come up with many antibacterial compounds that drug designers could use to make medicines.

The Trump administration's push for 'energy dominance' could spur a new wave of domestic uranium production. A scholar describes the damage done in past uranium booms and the visible scars that remain.

College students may think they are living a fit life, but a recent study adds to growing research that suggests that many students are developing risk factors for heart disease.

Despite good intentions, efforts to hold colleges and universities accountable often miss the mark. The reasons why range from politics to resistance among the institutions themselves.

While parents are growing more concerned about their children's easy access to porn, they often don't realize just how 'hardcore' and violent it has become and how early their kids are seeing it.

There's a norovirus outbreak at the Winter Olympics. Here's what that means – and why it's so hard to stop.

When school shootings take place, beefed up security is often seen as a solution. Experience shows, however, that school shootings stem from social factors that require a different response.