Time Machine
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.
Cloudy with a chance of radiation
Poor weather in Paris sparked the discovery of a new property of matter.
