Narcolepsy is a disease in which a person constantly wants to sleep.

A year on Mercury is only 88 days long, but a full day as we know is about 59 days, even though the planet takes 58 days to rotate on its axis.

A hummingbird's heart beats at over a 1,000 times a minute.

The longest street in the world is Yonge street in Toronto Canada measuring 1,896 km (1,178 miles).

The first product to have a bar code was Wrigley's gum.

Human footprints on the moon will never disappear.

Titanic was the first ship to use an SOS signal when it crashed.

Dolphin milk is the most fatty and calorific of all mammals.

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It would take a snail a full 4,575 years to circle the Earth.

Dubai is home to the world's largest man-made archipelago, the Palm Jumeirah.

The more sunlight a man gets, the higher his testosterone levels.

A chameleon's tongue is twice the length of its body.

The only continent without active volcanoes is Australia

Sea stars can change their gender if necessary.

Like fingerprints, everyone's tongue print is different.

What is the strongest muscle in the human body? The Heart

The parachute was invented by Leonardo da Vinci in 1515.

The Vatican city has zero birth rates.

𝐖𝐡𝐢𝐥𝐞 𝐲𝐨𝐮 𝐬𝐥𝐞𝐞𝐩 𝐲𝐨𝐮 𝐜𝐚𝐧'𝐭 𝐒𝐦𝐞𝐥𝐥 𝐚𝐧𝐲𝐭𝐡𝐢𝐧𝐠,𝐞𝐯𝐞𝐧 𝐫𝐞𝐚𝐥𝐥𝐲,𝐫𝐞𝐚𝐥𝐥𝐲 𝐛𝐚𝐝 𝐨𝐫 𝐩𝐨𝐭𝐞𝐧𝐭 𝐒𝐦𝐞𝐥𝐥𝐬