Most people form long-term relationships with someone within their social circle.

Beethoven continued composing music after becoming deaf.

The Sydney Opera House features a distinctive shell-like design.

Rowing is considered one of the most physically demanding Olympic sports, requiring near-maximal effort for about 6 minutes.

Leonardo da Vinci could write with one hand and draw with the other at the same time.

Freestyle skiing's halfpipe event requires athletes to complete tricks at heights of up to 7 meters above the pipe's lip.

Globalization has lowered consumer prices but also suppressed wages in some sectors in developed countries.

The Olympic rings represent the five continents of the world — but no particular ring is tied to a specific continent.

The Popol Vuh is the Mayan creation myth — humanity was made from maize after earlier attempts from mud and wood failed.