Discover · History

On this day — April 22

A hand-curated thread of what happened on this date, across centuries.

Observed today

Earth Day

Started in 1970 as a US teach-in on environmental issues; now a global touchstone for climate action. Plant something, fix something, vote for something.

🇺🇸🇨🇦🇲🇽

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2025

Milestone

At least 26 people are killed in a terrorist attack on a group of tourists in Pahalgam, Jammu and Kashmir

The Resistance Front (TRF), an offshoot of the Pakistan-based militant group Lashkar-e-Taiba claimed responsibility for the attack.

2020

Milestone

Four police officers are killed after being struck by a truck on the Eastern Freeway in Melbourne while speaking to a speeding driver, marking the largest loss of police lives in Victoria Police history.

2016

Politics

The Paris Agreement is signed

an agreement to help fight global warming.

2005

Politics

Japan's Prime Minister Junichiro Koizumi apologizes for Japan's war record.

1993

Milestone

Eighteen-year-old Stephen Lawrence is murdered in a racially motivated attack while waiting for a bus in Well Hall, Eltham.

1992

Milestone

A series of gas explosions rip through the streets in Guadalajara

Mexico, killing 206.

1977

Milestone

Optical fiber is first used to carry live telephone traffic.

1974

Milestone

Pan Am Flight 812 crashes on approach to Ngurah Rai International Airport in Denpasar

Bali, Indonesia, killing all 107 people on board.

1970

Milestone

The first Earth Day is celebrated.

1970

Sport

Chicano residents in San Diego

California occupy a site under the Coronado Bridge, leading to the creation of Chicano Park.

1969

Milestone

British yachtsman Sir Robin Knox-Johnston wins the Sunday Times Golden Globe Race and completes the first solo non-stop circumnavigation of the world.

1969

Milestone

The formation of the Communist Party of India (Marxist–Leninist) is announced at a mass rally in Calcutta.

1966

Milestone

American Flyers Airline Flight 280/D crashes on approach to Ardmore Municipal Airport in Ardmore

Oklahoma, killing 83.

1954

Broadcasting

Red Scare: Witnesses begin testifying and live television coverage of the Army–McCarthy hearings begins.

1951

Politics

Korean War: The Chinese People's Volunteer Army begin assaulting positions defended by the Royal Australian Regiment and the Princess Patricia's Canadian Light Infantry at the Battle of Kapyong.