Calvin Coolidge, during one stretch of his presidency, was getting 15 hours of shut-eye each day, while William Howard Taft was known for nodding off during public events.
Trump declared a national emergency in order to build a wall.
AP Photo/ Evan Vucci
The Grand Canyon, which marks 100 years as a national park on Feb. 26, 2019, is known today as an iconic natural wonder. But early European visitors weren't impressed.
Lennie Skutnik, center front, at Reagan’s State of the Union address.
AP Photo/File
Bison once dominated the Great Plains but were nearly wiped out by hunters in the 1800s. Now scientists are learning that bison's presence improves plant and wildlife diversity on the prairies.
By the end of Prohibition, distilled spirits made up more than 75 percent of alcohol sales.
Lando Aviles/Shutterstock.com
Chris Edelson, American University School of Public Affairs
History shows that Congress can play an important role in checking a president's power.
Mural at Rockaway Brewing Company in Long Island City, Queens, New York, a longtime industrial and transportation hub that now is rapidly redeveloping.
AP Photo/Mark Lennihan
Many homes, parks and businesses in US cities stand on former manufacturing sites that may have left legacy hazardous wastes behind. A new book calls for more research into our urban industrial past.
Donald Trump and Paul Manafort in 2016.
Mark Reinstein/MediaPunch /IPX
Peter C. Mancall, University of Southern California – Dornsife College of Letters, Arts and Sciences
The Pilgrims repeatedly thanked God for their good fortune. But without two earlier developments, the entire undertaking at New Plymouth would have likely failed.
Trump awarded the Presidential Medal of Freedom to seven people, including former NFL quarterback Roger Staubach.
Reuters/Jonathan Ernst
In 1968, Lyndon Johnson's ridicule of presidential candidate Hubert Humphrey as weak and feminine tells us something about how a party of progressives still struggles with the idea of masculinity.
Richard Nixon, Republican candidate for president, is seen in August 1968.
AP Photo
In scrutinizing statues honoring Confederate figures, journalists have overlooked military bases named after generals who fought to defend the slavery of black people.
And if President Trump is removed from office? Meet President Pence.
Mandel Ngan/AFP
The claim of "resistance" inside the White House offers the possibility of government by Trump appointees who prefer to keep their positions rather than publicly denounce a man they disapprove of.
John F. Kennedy’s assassination shocked the world in the 1960s and arguably played a part in the rise of Donald Trump today.
Abbie Rowe/AAP
Enslaved workers used to grow cotton and mill flour. Now prisoners grind beef and crate eggs. Here, a historian explores Americans' troubling habit of consuming the products of slave labor.
The 2016 Maple fire (photographed in July 2017) reburned young forests that had regenerated after the 1988 Yellowstone fires. More frequent high-severity fires are expected in the future as climate warms, which may change patterns of forest recovery.
Monica Turner
Huge fires roared through Yellowstone National Park in the summer of 1988, scorching one-third of the park. Since then the park has been a valuable lab for studying how forests recover from fires.