How a frustrated journalist and a printing press roller inspired the invention of the modern ballpo…

Discover how Katharine Blodgett used a simple water trough and 44 molecular layers to create invisi…

Discover how Emil Fischer's frustration with bubbling sugar flasks led to the 'lock-and-key' model,…

Discover how Judah Folkman's rabbit eye experiment in the 1970s proved tumors need blood to grow, c…

In 1973, Martin Cooper stepped onto a Manhattan street with a brick-sized phone and dialed his bigg…

Discover how Henry Norris Russell's 1913 scatter plot solved the stellar paradox, proving stars hav…

In the 1960s, physicists gave up on sending light through glass. Charles Kao proved them wrong by f…

In 1857, John Speke searched for the Nile's source. Fever couldn't stop him from finding Lake Victo…

Discover how Linus Pauling deduced the alpha-helix structure of proteins using only paper strips an…

In 1859, Alfred Russel Wallace discovered that ocean depth, not just climate, split Asian and Austr…

In 1868, astronomers spotted a mysterious yellow band in the sun's spectrum. Learn how this cosmic …

Discover how Max Theiler tamed yellow fever by passing the virus through 100 generations of mice, c…