Ultraviolet B radiation converts skin precursors into vitamin D, essential for calcium metabolism and bone health.

The official title is *Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel*, established in 1968 by Sweden’s bank.

Gabriel García Márquez wrote "One Hundred Years of Solitude", a landmark of magical realism and Latin American literature.

Ludwig van Beethoven composed the Ninth Symphony, whose final movement sets Schiller's "Ode to Joy" and celebrates human solidarity.

The Mayan Long Count calendar ended a cycle in December 2012, which led to widespread doomsday speculations.

Antoine Lavoisier standardized chemical nomenclature, discovered oxygen’s role in combustion, and is considered father of modern chemistry.

Jupiter is the largest planet, a gas giant with strong magnetic fields and dozens of moons, dominating the outer Solar System.

Chlorofluorocarbons (CFCs) destroy stratospheric ozone, allowing harmful UV radiation to reach Earth, first observed in Antarctica.

The Schengen Agreement allows passport-free travel across many European countries, facilitating movement and integration in the EU.

The Rio Grande (Río Bravo) forms a long stretch of the US–Mexico border, serving as a geographic and political boundary.