More than 90% of the world's currency exists only digitally — not as physical cash.

The Zeigarnik effect explains why unfinished tasks are often remembered better.

Fact #1474 · Technology

Tahini, a sesame seed paste, is richer in calcium than most dairy products.

Fact #4848 · Technology

Your brain can simulate future events before they happen.

Fact #2272 · Technology

The first satellite, Sputnik, was launched by the Soviet Union on October 4, 1957.

Fact #4389 · Technology

Airplane black boxes are painted bright orange for visibility.

Fact #2753 · Technology

The smartphone combines communication, computing, and media functions.

Fact #1550 · Technology

The Akashi Kaikyō Bridge in Japan is one of the longest suspension bridges.

Fact #1521 · Technology

More than 90% of the world's currency exists only digitally — not as physical cash.

Fact #3800 · Technology