Want to learn more about these weapons? Watch “Revolutionary War Weapons,” streaming here ➡️

Made of iron, cannons were the most powerful weapon systems known at this time. A team of people worked to shoot one, propelling heavy iron balls into the battlefield in a blaze of fire and force. Learn more ➡️

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In 1781, when American and French troops cornered the British in Yorktown, both sides built earthworks to fend off sieges. These were built with a combination of wooden spikes and gabions (wicker baskets filled with dirt), creating formidable defenses ➡️

The Tomahawk, a deadly axe often yielded by Indigenous people, could be used with deadly force in close combat. Watch the strike demonstrated on a melon:

The Americans set up sharpshooting units that used long rifles. Spiral grooves inside the barrel and two sights made it more effective than the musket. But it had a longer loading time, leaving a soldier vulnerable to close-range attack. Learn more ➡️

During the Revolutionary War, an American inventor developed the world's first combat submarine, nicknamed the Turtle. American forces used it in an attempt to blow up the British flagship HMS Eagle by drilling into the ship from underwater and planting a bomb.

Though it was a staple of the Revolutionary War, the Brown Bess musket is seen today as crude and inaccurate. But the musket carried powerful explosive force. Watch it shoot through a gelatin block made to replicate human tissue:

The Revolutionary War was fought with top military technology of the day, from the Brown Bess musket to the world’s first combat submarine. See these weapons in action - and discover how they helped propel the Americans to victory 🧵⬇️

Scientists have discovered the building blocks of life in samples retrieved from a distant asteroid.

Take a look inside a fossilized pterosaur egg:

Watch baby eagles hatch and grow:

Birds are today's only living dinosaurs. Here's how they survived ➡️

"Most complex computers are still morons. High speed morons, but still morons." . Watch this 1976 interview with sci-fi author Sir Arthur C. Clarke, who envisioned a computer-dominated future in the 70s:

Watch scientists extract a rare turtle fossil with liquid nitrogen:

This is how the infamous "Iceman" mummy died:

"Sleepwalking is a glitch in the system because our identity is not in control.". Here's what happens in the brain:

Giant prehistoric fungi once ruled the Earth.

Yes, there's really a frozen exoplanet named Hoth.

The most baffling idea in physics, explained.

This ancient whale could walk on land. Here's what it looked like: