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Atmosphere: Earth's atmosphere is composed of 78% nitrogen, 21% oxygen, and trace amounts of other gases like argon and carbon dioxide. This atmosphere protects life by absorbing harmful solar radiation and reducing temperature extremes between day and night.
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In 2014, a missing woman on a vacation in Iceland was found in a search party for herself.
A missing tourist in the Eldgja Canyon was found in the search party tasked to locate her. She was last seen in the tour bus nearing the volcanic canyon. However, when she changed out of her clothes, she was reported missing. The search progressed from evening until the wee hours of the morning. The tourist group – and likely the tourist herself – were in for the surprise of their lives when they found the missing person in the search party itself.
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Sneezing while traveling at 60 mph makes you close your eyes for 50 feet.
In a not-so-fun fun fact, the few milliseconds you spend sneezing can make you lose track of the distance you travel. No matter how amazing that may be, it is very hazardous for the road. About 2,500 road accidents occur in a U.K. winter due to colds and sneezing.
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People don’t sneeze in their sleep.
While asleep, humans are actually more prone to sneezing because the mucous membranes swell when lying down. However, the brain shuts down the neuroreceptors that stimulates our sneezing reflex. That way, only very strong stimuli can wake one to sneeze.
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Outer Core: A 1,400-mile-thick (2,300 kilometers) layer of liquid iron and nickel surrounding the inner core.
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Mantle: The thickest layer, about 1,800 miles (2,900 kilometers) thick, made of hot, viscous rock.
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Crust: The outermost solid layer, averaging 19 miles (30 kilometers) thick on land and about 3 miles (5 kilometers) under the oceans.
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Climate and Weather
Earth's climate is regulated by its atmosphere and oceans. The greenhouse effect, primarily due to water vapor and carbon dioxide, maintains an average surface temperature of about 14.76°C (58.57°F), allowing water to remain liquid. The tilt of Earth's axis causes seasonal variations in climate.
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Human Impact
Human activities have significantly altered Earth's environment, contributing to climate change, pollution, deforestation, and biodiversity loss. The release of greenhouse gases is causing global warming, melting glaciers, rising sea levels, and shifting ecosystems.
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Fun Facts
Earth is not named after a Greek or Roman deity; its name comes from Old English and Germanic words meaning "the ground".
The planet has no rings.
The longest mountain range on Earth is underwater, at the bottom of the Arctic and Atlantic oceans.
Earth remains the only planet known to support life, with its unique combination of liquid water, protective atmosphere, and dynamic geology.