The Library of Congress in Washington, D.C. adds about 10,000 new items every single day, making it the largest library in the world.

#knowledge

The Great Wall of China is not a single continuous wall, but a series of walls and fortifications built over centuries, stretching more than 21,000 kilometers.

#history

Your brain has about 86 billion neurons, and in a single day, they send more electrical signals than all the phones in the world combined.

#science

Writing down what you are grateful for each day has been proven to improve mental health and lower stress levels.

#psychology

A sunflower is not one flower but thousands of tiny flowers packed together into what looks like a single bloom.

#plants

The Amazon rainforest produces about 20% of the world’s oxygen and is home to more than 10% of all known species on Earth.

#plants

Black holes don’t actually “suck” — instead, they warp space-time so strongly that nothing, not even light, can escape once it crosses the event horizon.

#space

People tend to remember emotionally charged events more vividly than neutral ones — this is called the “flashbulb memory” effect.

#psychology

The oldest known written recipe is for beer, dating back over 4,000 years to ancient Mesopotamia.

#history