10 U.S. Presidents Who Were Inventors or Loved Science
Lots of presidents were great at politics, but some were also super curious about science, inventions, and how things work! They built gadgets, collected rocks, studied animals, or even dreamed up new ideas. Here are 10 presidents who were inventors themselves or loved science the most—ranked by how “science-y” they got. Each one has a fun fact kids will love!
- Thomas Jefferson (1801–1809)
The ultimate tinkerer president! Jefferson invented a “polygraph” machine (not the lie detector—his version copied letters automatically), redesigned plows, built dumbwaiters for food, and kept detailed weather records every day for decades.
Kid fact: He loved fossils and sent explorers to find giant mammoth bones—he thought they might still be alive out West! - Benjamin Harrison (1889–1893)
Harrison was fascinated by electricity and weather. He installed electric lights in the White House (but was scared of the switches and made staff turn them on/off for him!).
Kid fact: He once got a shock from the new lights and told people, “I’m not touching those again!” - Herbert Hoover (1929–1933)
Before becoming president, Hoover was a world-famous mining engineer who helped invent new ways to dig gold and other metals. He loved geology and rocks.
Kid fact: He wrote a book called Principles of Mining—imagine a president writing a science textbook! - Jimmy Carter (1977–1981)
Carter studied nuclear physics in the Navy and helped build early nuclear submarines. He was one of the smartest science presidents ever!
Kid fact: He once stopped a nuclear reactor meltdown by hand during a training exercise—real-life superhero stuff! - Theodore Roosevelt (1901–1909)
Teddy was a naturalist who collected thousands of animal specimens, wrote books about birds and mammals, and created over 230 million acres of national parks and wildlife refuges.
Kid fact: He had a “nature table” in the White House with live animals—snakes, badgers, even a one-legged eagle! - John Quincy Adams (1825–1829)
Adams loved astronomy—he helped build the first observatory in the U.S. and was obsessed with stars and science.
Kid fact: After being president, he served in Congress for 17 more years and fought for science funding! - James Madison (1809–1817)
Madison kept detailed weather diaries for over 50 years and was very interested in agriculture, crop rotation, and soil science.
Kid fact: He invented an early thermometer and barometer setup at Montpelier—his own mini weather station! - Franklin D. Roosevelt (1933–1945)
FDR collected stamps (philately) and built model ships—he even designed some of his own stamp ideas while president.
Kid fact: He had a huge stamp collection and said collecting stamps helped him relax during the Great Depression and World War II. - George Washington (1789–1797)
Washington was an inventor-farmer—he designed a new kind of plow, built a two-story barn with a threshing floor, and experimented with crop rotation.
Kid fact: He was obsessed with mule breeding—he created America’s first mules by crossing donkeys and horses! - Barack Obama (2009–2017)
Obama loved science, space, and technology—he hosted science fairs at the White House and pushed for more STEM education.
Kid fact: He geeked out over Star Wars and Spider-Man comics—he even joked he’d like to be a superhero!
- Jefferson and Teddy Roosevelt were the biggest science lovers/inventors.
- Several (Hoover, Carter, Madison) had serious science or engineering training before office.
- Many used science hobbies to relax from the stress of being president—stamps, weather logs, and model ships were popular!
