People, places, animals, inventions, and more.

The 16th president of the United States, remembered for leadership during the Civil War.

The emperor penguin is the largest penguin species and breeds on Antarctic sea ice during the dark, cold winter.

Machu Picchu is a fifteenth-century Inca settlement set high in Peru's Andes within a protected mountain and tropical-forest landscape.

A magnetic compass is a navigation instrument whose magnetized needle aligns with Earth's local magnetic field to indicate direction.

The Titanic disaster was the 1912 sinking of a passenger liner after it struck an iceberg during its maiden Atlantic voyage.

Earth’s natural satellite and the brightest object in the night sky after the Sun.

Tyrannosaurus rex was a large carnivorous dinosaur that lived in western North America near the end of the Cretaceous Period.

A machine for producing many copies of text or images efficiently.

A microscope is an instrument that enlarges or resolves details too small to examine clearly with unaided human vision.