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97percent of the water on Earth is salt water, water found in lakes, rivers, streams, ponds, swamps, etcetera accounts for only 0.3 percent of the world's fresh water. The rest is trapped in glaciers or is in the ground 97percent of the water on Earth is salt water, water found in lakes, rivers, streams, ponds, swamps, etcetera accounts for only 0.3 percent of the world's fresh water. The rest is trapped in glaciers or is in the ground

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Researchers have calculated that the average cumulus cloud you see on a sunny day - weighs an incredible 500 000 kg Researchers have calculated that the average cumulus cloud you see on a sunny day - weighs an incredible 500 000 kg

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Radio waves are a form of electromagnetic radiation – the same phenomenon as light, X-rays and various other types of radiation, but with much longer wavelengths. They travel at the speed of light 300 000 km/second. Radio waves are a form of electromagnetic radiation – the same phenomenon as light, X-rays and various other types of radiation, but with much longer wavelengths. They travel at the speed of light 300 000 km/second.

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The first known robot to be built was a steam-powered "pigeon", created around 400 to 350 BCE by the ancient Greek mathematician Archytas. The first known robot to be built was a steam-powered "pigeon", created around 400 to 350 BCE by the ancient Greek mathematician Archytas.

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Uranus is the only planet in our solar system that rolls on its side like a barrel, while Venus is the only planet that spins in the opposite direction to Earth. Uranus is the only planet in our solar system that rolls on its side like a barrel, while Venus is the only planet that spins in the opposite direction to Earth.

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There was a fierce storm that raged over the town on the night Nikola Tesla was born. It was told it is a bad omen to which Tesla’s mother replied: “No. He will be a child of light.” There was a fierce storm that raged over the town on the night Nikola Tesla was born. It was told it is a bad omen to which Tesla’s mother replied: “No. He will be a child of light.”

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It can take a photon 40 000 years to travel from the core of the sun to its surface, but only 8 minutes to travel the rest of the way to Earth. It can take a photon 40 000 years to travel from the core of the sun to its surface, but only 8 minutes to travel the rest of the way to Earth.
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If I have been able to see further, it was only because I stood on the shoulders of giants. 

Isaac Newton