Time Machine
Strokes of life
A German illustrator and naturalist laid the foundation for modern entomology.
Sky full of stars
Tycho Brahe spotted celestial bodies before the advent of telescopes.
Scalpels and sketches
Spanish anatomist Santiago Ramón y Cajal made fundamental discoveries in neuroscience.
The minister and the mouse
In the late 1700s, a radical English thinker discovered the presence of oxygen in the air.
Safety first, on the surgeon's table
Joseph Lister's use of an antiseptic spray dramatically reduced deaths during surgeries.
