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Panama Canal infographic

Timeline and Map of the Panama Canal

Bog body. Head of Tollund Man. Died at about age 30-40, Dated to about 280 BCE early Iron Age. Found Bjaeldskovdal bog Denmark in 1950 near Elling Woman. Most well preserved bog body to date. Human remains mummified in natural peat bogs. mummy, embalm

9 Noteworthy Bog Bodies (And What They Tell Us)

Andrew Jackson delivering a speech while on his way to Washington, D.C., for his inauguration in 1829. From Harper's Weekly, 1881.

5 Remarkably Close U.S. Presidential Elections

Martin Luther King, Jr.

Why We Celebrate MLK Day

Prince. musician Prince (Prince Rogers Nelson). Prince WELCOME 2 AMERICA tour. Exclusive North American Performances, 2010-11

7 Celebrities You Didn’t Know Were Inventors

Close-up of ostriches (Struthio camelus) necks and heads; location unknown.

6 of the World's Most Dangerous Birds

Flag of Bhutan

6 Small Kingdoms of the World

block: Media

engine

Images

piston and cylinder

piston and cylinder

An automobile engine block showing pistons within cylinders.

© yuyangc/Shutterstock.com

gasoline engine

gasoline engine

Typical piston-cylinder arrangement of a gasoline engine.

Encyclopædia Britannica, Inc.