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It is quite possible that in some places these materials may be concentrated enough to be mined economically. The Mars landers Viking I, Viking II, Pathfinder

As a hobby, astrophotography requires investment of two types. The first is financial: you'll need a camera, at least one lens, and a few accessories

Most Egyptians were probably descended from settlers who moved to the Nile valley in prehistoric times, with population increase coming through natural fertility.

How did Ojibwe survive winter? But in the winter, they spread out again to make it easier to get food during the cold, hard months. Ojibwe people fished

Which volcano can end the world? The Yellowstone supervolcano is a natural disaster that we cannot prepare for, it would bring the world to its knees and

Every 60 seconds – 197.6 emails are sent. Every 60 seconds – 200,000 people tweet. Every 60 seconds – 695,000 Instagram Stories are shared.

The intensity of the heat island is the simplest and most quantitative indicator of the thermal modification imposed by the city upon the territory in

What is the main difference between real and virtual image? Real image Virtual image The rays of light after reflection meet at a point.

Scientists have long known the fate of our solar system – and likely the fate of Earth itself. In a few billion years, the Sun will run out of fusion fuel

The Great Pyramid, the only Wonder that still exists, stood as the world's tallest human-made structure for nearly 4,000 years. Erected around 2560 B.