The earth is not a perfect sphere, it's an oblate spheroid due to centrifugal force. The earth whirls through space at just over 1,000 miles per hour. El Azizia, Libya, is the hottest spot on Earth's surface, reaching up to 136 degrees Fahrenheit. The magnetic field is slowly creeping northward due to the Earth's molten liquid core. Coral reefs are the largest living structures on Earth. Hawaii's Kilauea volcano is the most active volcano in the world. Earth is the only planet not named after a Greek or Roman deity. Only 3% of all water on Earth is freshwater. 1.3 million planet Earths could fit inside the sun. The sun's light takes 8 minutes to reach the earth.