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Introduction References & Edit History Quick Facts & Related Topics

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Earth from space. Full-hemisphere views of the Earth showing Hurricane Linda at its peak approaching Baja California on 1997 September 11.

What Is Earth’s Velocity?

Solar system illustration. (planets; sun)

Why Are Planets Round?

World map. Continents. Oceans. Mendel thumb ok

Just How Many Oceans Are There?

ripped torn flag, pirate, skull

Are There Laws on the High Seas?

A big, powerful wave breaking near the shore.

What Makes a Wave Go Rogue?

Discover

Internet http://www blue screen. Hompepage blog 2009, history and society, media news television, crowd opinion protest, In the News 2009, breaking news

Who Invented the Internet?

Cathedrale St.Jean in Lyon, France has a 14th-century astronomical clock that shows religious feast days till the year 2019; Perpetual Calendar

Ten Days That Vanished: The Switch to the Gregorian Calendar

Periodical Cicada, Adult, Magicicada spp. Requires 17 years to complete development. Nymph splits its skin, and transforms into an adult. Feeds on sap of tree roots. Northern Illinois Brood. This brood is the largest emergence of cicadas anywhere

Why Do Some Cicadas Appear Only Every 17 Years?

Poker game. Card game. Royal Flush in poker. Hearts suit gambling

Poker Hands Ranked

Figure 13: A Maxim machine gun, belt-fed and water-cooled, operated by German infantrymen, World War I.

7 Deadliest Weapons in History

King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

Aspirin pills.

7 Drugs that Changed the World

SOFAR channel: Facts & Related Content

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Facts

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sound ocean iceberg ocean current ocean basin sea ice oceanic crust ocean acidification ocean warming Why Is The Ocean Blue?calcite compensation depth pack ice