On a bright, sunny day, a group of first-graders eagerly begins a science investigation called “Shadow Town.” The teacher gathers them in a circle and asks, “What causes shadows?” It’s a good question ...

Pneumonia is an infection that affects one or both lungs, and can be caused by bacteria, virus or fungus.

The lights are mostly back on in Spain, Portugal and southern France after a widespread blackout on Monday. The blackout caused chaos for tens of millions of people. It shut down traffic lights and ...

Discover 100 scientific phenomena so bizarre they'll leave you speechless! From cosmic wonders to quantum quirks, explore mind-bending realities. Dive in a ...