In 1919, 1,376 new Norway Maples were planted along streets in Brooklyn.
Department of Parks of the Borough of Brooklyn, City of New York
In 1910, along one 45-block stretch of New York City's Fifth Avenue, there were only 13 trees.
Examination by ophthalmoscope in JF Phillips’ Ophthalmic Surgery and Treatment, 1869.
Screen time wasn't a issue in the 19th century but that didn't stop concerns over how new developments might damage eyesight
Sill from Peterloo.
As a left-wing rallying cry, this account of the 1819 massacre in Manchester fails to rouse the inner revolutionary.
An 1899 photograph of the pressroom of the Planet, a newspaper in Richmond, Va.
To survive in 19th-century newsrooms, reporters would have to hustle to get by, even if it meant producing fakes, staging events and sharing work with reporters from competing newspapers.
Weather towers like this one in a park in Vienna were a popular way for the 19th-century public to track the influence of weather on their lives.
Climate science in the computer age is the pursuit of elite scientists. A historian of science sees an upside to the popular, participatory approach of studying changes to the climate from the 19th century.
Look both ways! Public education was the only thing policy makers did to help the rising number of pedestrians killed by cars. Staged image from Ontario Safety League 1923 safety campaign.
City of Toronto Archives
Torontonians have been experiencing pedestrian and bicyclist fatalities since the advent of the automobile. The one way to stop the deaths is to ban cars but since that won't happen, what can be done?
An Afghanistan national police officer helps a U.S. Army lieutenant, June 14, 2007. Can honour be restored in today’s international conflicts?
Michael Bracken/US Army/Flickr
Nothing displays the ethical superiority of one’s values better than to treat a foe with the respect due another human being.
A drawing from the original edition of Lydia Maria Child’s ‘Flowers for Children,’ which includes her famous Thanksgiving poem.
Library of Congress
In the 19th century, puddings were as popular and widespread as pasta dishes are today.
A statue of Henry David Thoreau in front of a replica of his cabin in Concord, Massachusetts.
Thoreau spent his life pursuing the 'hard bottom' of truth. But he confronted a sensationalist newspaper industry that, in many ways, mimicked today's media environment.
Lord Macartney’s first meeting with the Qianlong emperor in 1793.
"A study of History", Arnold Toynbee
What can we learn from the 19th-century Qing dynasty?
‘Dandy philosopher’, Sir Humphry Davy.
The likes of Charles Darwin and Humphry Davy weren't always seen as the powerful, authoritative heroes they're portrayed as today.