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Atomic cloud formation from the Baker Day explosion over the Bikini Atoll; photo created July 25, 1946. (Test Baker, mushroom cloud, underwater nuclear explosion)

Why Does a Mushroom Cloud Look Like a Mushroom?

A human Inuit skull in a stone chambered cairn in Ilulissat in Greenland. These ancient graves are pre christian and are at least 2000

14 Tough Questions Answered

Smoke billowing 20,000 feet above Hiroshima, Japan, from the first atomic bomb every dropped in World War II.

70 Years After Hiroshima

Old medieval wooden pirate military war ship with a cannon on the deck pointed out and aiming

Pirate School: 5 Things You Can Shoot from a Cannon

Battle of the Alamo from "Texas: An Epitome of Texas History from the Filibustering and Revolutionary Eras to the Independence of the Republic, 1897. Texas Revolution, Texas revolt, Texas independence, Texas history.

6 Wars of Independence

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Bakers Dozen of Donuts, or Paczki's

Why Is a Baker’s Dozen 13?

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?

Cuban Bee Hummingbird (Mellisuga helenae) single adult male, Zapata peninsula, Cuba, Caribbean.Bee hummingbirds are the smallest birds in the world.

Queen Mab’s Stable: 7 of the Smallest Animals

Lusitania sinking, illustration from The War of the Nations (New York), December 31, 1919. World War I, WWI. This image is one of three on the page. (See source file for the other two.)

7 of the World’s Deadliest Shipwrecks

Lake Mead (the impounded Colorado River) at the Hoover Dam. The light-coloured band of rock above the shoreline shows the decrease in water level in the first few years of the 21st century.

6 Lakes That Are Drying Up

The Colosseum, Rome, Italy. Giant amphitheatre built in Rome under the Flavian emperors. (ancient architecture; architectural ruins)

New Seven Wonders of the World

Estimated battle casualties, Normandy invasion, World War II. WWII, D-Day

Estimated Battle Casualties During the Normandy Invasion and Campaign to Liberate Paris (June–August 1944)

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nuclear weapon nuclear warfare nuclear strategy nuclear football nuclear electromagnetic pulse tactical nuclear weapons intermediate-range nuclear weapons