The consumer sentiment index just hit its lowest reading in 74 years. What it actually measures, how it is calculated, and why people feel broke in a growing economy.

In 1976, scientists in Belgium opened a thermos containing blood samples from Zaire and discovered a threadlike virus unlike anything documented before. Nearly 50 years later, Ebola has caused dozens...

Your body is full of cells that stopped working but refuse to die. Scientists call them senescent cells. The rest of us call them zombie cells. Three 2026 breakthroughs in detection, vulnerability,...

Nuclear fusion could provide virtually limitless clean energy by combining light atoms the way stars do. Here's how it works, why it has taken so long, and why 2026 breakthroughs are changing...

Voyager 1 has been traveling for nearly 50 years, reached interstellar space, and is still sending data from 16 billion miles away. Here is the full story of the spacecraft that refused to die.

Perovskite solar cells have gone from 3.8% efficiency to 27.3% in just 15 years — and the first commercial panels are now shipping. Here's how the crystal structure works, why it could make solar...