Information about our planet & health

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We have a wonderful Earth. It seems to be made just for us. The air is just the right mixture for us to breathe and be healthy. Water and food have just the right nutrients for us (if we eat the right foods). The temperatures in most places are within our range for comfort.

We have made every material thing we have using the raw materials from Earth. These resources have been here for thousands of years, but we only began really taking advantage of them relatively recently.

We have transformed approximately half the land on Earth for our own uses. Around 11 percent each for farming and forestry, and 26 percent for pasture, with at least another 2 to 3 percent for housing, industry, services and transport. The area used for growing crops has increased by almost six times since 1700, mainly at the expense of forest and woodland.
7% of the world's area was used for farming in 1700. 40% was used in 2005.

It takes almost exactly 24 hours for the Earth to rotate and that's how we get our day.

The Earth is moving (from rotation) at about 1000 miles per hour at the equator.

The Earth is moving around the Sun at about 67,000 miles per hour.

The Earth moves around the sun once every year.

Gravity holds the Earth together.

The diameter of the Earth is 7,926 miles.

The surface area of the Earth is 196,950,711 square miles (land = 57 million square miles & water = 140 million square miles)

71% of the earths surface is water, 97% of this is salt water. The mostly solid skin of the planet is only 41 miles thick.

The Earth is estimated to be more than 4.5 billion years old.

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