Henry Knowles Beecher

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Aspirin pills.

7 Drugs that Changed the World

Photo of the antacid Tums

How Do Antacids Work?

Blackboard inscribed with scientific formulas and calculations in physics and mathematics

The World Science Festival’s Pioneers in Science

People wearing surgical masks (also called face mask or medical masks or safety masks) walk through the city center of Milan, Italy on Feb. 23, 2020. Coronavirus disease COVID-19 pandemic

How Do Face Masks Control the Spread of Disease?

Laboratory glassware (beakers)

5 Quizzes That Will Tell You Whether You Should Have Been a Scientist

Discover

jeans, denim, pants, clothing

Why Do We Say “A Pair of Pants”?

Abstract vector hi speed internet technology background

History of Technology Timeline

The impeachment trial of Pres. Andrew Johnson, illustration from Frank Leslie's Illustrated Newspaper, March 28, 1868.

What If the President Is Impeached?

Andrew Jackson delivering a speech while on his way to Washington, D.C., for his inauguration in 1829. From Harper's Weekly, 1881.

5 Remarkably Close U.S. Presidential Elections

Red Army (Soviet) soldiers in the Russian Revolution.

Russian Revolution Timeline

Dr. Martin Luther King Jr. addresses marchers during his "I Have a Dream" speech at the Lincoln Memorial in Washington. August 28th 1963

Was Martin Luther King, Jr., a Republican or a Democrat?

Martin Luther King, Jr.

Why We Celebrate MLK Day

Henry Knowles Beecher: Media

American anesthesiologist and researcher

Videos

anesthesia

anesthesia

How anesthesia works.

Video: © American Chemical Society (A Britannica Publishing Partner)

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