Henri Becquerel discovered radioactivity in 1896, later studied by the Curies and vital for nuclear science.

Nicolaus Copernicus published *De Revolutionibus* (1543), proposing the Sun, not Earth, as the universe’s center.

The Galápagos Islands belong to Ecuador and are famed for their unique biodiversity that influenced Darwin's ideas.

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

James Chadwick discovered the neutron in 1932, completing the model of atomic structure and earning the Nobel Prize in Physics.

The Ming dynasty expanded and fortified the Great Wall between the 14th–17th centuries, much of which still stands today.

The first modern Olympic Games were held in Athens in 1896, reviving the ancient Greek athletic tradition.

The Inca used quipus, knotted strings, as a method of recording numbers and information without writing.

Werner Heisenberg introduced the uncertainty principle in 1927, highlighting the fundamental limits of measuring subatomic properties.

The Vedas, composed in Sanskrit around 1500–500 BCE, are the oldest sacred scriptures of Hinduism, guiding rituals and philosophy.