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The details about the NSA's foreign surveillance programs are still not fully understood. And for many people, neither are the terms associated with some of the stories. What, exactly, is "metadata"? What does an "algorithm" do? We've tried to explain.

One of the most dangerous spots is Lake Victoria. And even the police who patrol the lake don't always know how to swim. But a life preserver may be on the way.

Self-driving delivery robots have popped up on the sidewalks of Washington, D.C. — and other locations have expressed interest. The bots learn about traffic patterns with every trip they take.

A song playing in the background of one episode has fascinated and eluded fans for more than two decades as they sought to track it, and the musicians, down. Now that mystery has finally been solved.

Flu is rising, and COVID levels are higher than last season's peak. But COVID hospitalizations and deaths are down. Nonetheless, COVID is still the most dangerous virus circulating.

Shipping containers may seem like a sustainable construction material, but are they actually eco-friendly? Many people don't want a heavily-used container — and the energy bills are through the roof.

Lawyers for the former president made a sweeping argument that he enjoys blanket immunity from federal prosecution for his alleged efforts to overturn the 2020 election results.

The Alabama Supreme Court has ruled that frozen embryos can be considered children under state law, a decision critics said could have sweeping implications for fertility treatment in the state.

Research suggests the biggest source of pain for children in the health care system is needles. One California doctor says the fear of needles is a serious problem, but proposes some simple solutions.

The law is intended to restart IVF treatments by shielding patients and providers from civil and criminal charges, but does not change the state Supreme Court's ruling that embryos are children.