Winter storms caused the Chehalis River to flood many cities in Lewis County, Washington, also closing a 20-mile portion of Interstate 5 for several days. At least eight deaths and billions of dollars in damages are blamed on the floods.

XCOR Aerospace makes first manned rocket aircraft delivery of US Mail in Mojave, California.

NASA loses radio contact with the Mars Polar Lander moments before the spacecraft enters the Martian atmosphere.

Six Firefighters killed in the Worcester Cold Storage Warehouse fire in Worcester Mass.

In Ottawa, Canada, representatives from 121 countries sign The Ottawa treaty prohibiting manufacture and deployment of anti-personnel landmines. The United States, People's Republic of China, and Russia do not sign the treaty, however.

UN Security Council Resolution 794 is unanimously passed, approving a coalition of United Nations peacekeepers led by the United States to form UNITAF, with the task of establishing peace and ensuring that humanitarian aid is distributed in Somalia.

The Greek oil tanker ''Aegean Sea'', carrying 80,000 tonnes of crude oil, runs aground in a storm while approaching La Coruña, Spain, and spills much of its cargo.

At Detroit Metropolitan Airport, Northwest Airlines Flight 1482 collides with Northwest Airlines Flight 299 on the runway, killing 7 passengers and 1 crew member aboard flight 1482.

Cold War: In a meeting off the coast of Malta, US President George H. W. Bush and Soviet leader Mikhail Gorbachev release statements indicating that the cold war between their nations may be coming to an end.

Bhopal Disaster: A methyl isocyanate leak from a Union Carbide pesticide plant in Bhopal, India, kills more than 3,800 people outright and injures 150,000–600,000 others (some 6,000 of whom would later die from their injuries) in one of the worst industrial disasters in history.

A soil sample is taken from Times Beach, Missouri that will be found to contain 300 times the safe level of dioxin.

In Cincinnati, Ohio, eleven fans are suffocated in a crush for seats on the concourse outside Riverfront Coliseum before a Who concert .

Shadow Traffic begins broadcasting in the New York City metropolitan area.

An assassination attempt is made on Bob Marley. He is shot twice, but plays a concert two days later.

Pioneer program: Pioneer 10 sends back the first close-up images of Jupiter.

Indo-Pakistani War of 1971: Pakistan launches pre-emptive strike against India and a full scale war begins claiming hundreds of lives.

October Crisis: In Montreal, Quebec, kidnapped British Trade Commissioner James Cross is released by the Front de libération du Québec terrorist group after being held hostage for 60 days. Police negotiate his release and in return the Canadian government grants five terrorists from the FLQ's Chenier Cell their request for safe passage to Cuba.

At Groote Schuur Hospital in Cape Town, South Africa, a transplant team headed by Christiaan Barnard carries out the first heart transplant on a human (53-year-old Louis Washkansky).

Berkeley Free Speech Movement: Police arrest over 800 students at the University of California, Berkeley, following their takeover and sit-in at the administration building in protest at the UC Regents' decision to forbid protests on UC property.

The current flag of Singapore is adopted, six months after Singapore became self-governing within the British Empire.

Greek Civil War: Fighting breaks out in Athens between the ELAS and government forces supported by the British Army.

Great Depression: US President Herbert Hoover announces to the U.S. Congress that the worst effects of the recent stock market crash are behind the nation and the American people have regained faith in the economy.

After nearly 20 years of planning and construction, the Quebec Bridge opens to traffic.

Bulgaria, Greece, Montenegro, and Serbia (the Balkan League) sign an armistice with Turkey, ending the two-month long First Balkan War.

First Balkan War: The Naval Battle of Elli takes place.

The Jovian moon Himalia is discovered by Charles Dillon Perrine at California's Lick Observatory.

US President Theodore Roosevelt delivers a 20,000-word speech to the House of Representatives asking the Congress to curb the power of trusts "within reasonable limits".

Eureka Stockade: In what is claimed by many to be the birth of Australian democracy, more than 20 gold miners at Ballarat, Victoria, Australia are killed by state troopers in an uprising over mining licences.

Illinois becomes the 21st U.S. state.

War of the Second Coalition: Battle of Hohenlinden, French General Moreau defeats the Austrian Archduke John near Munich decisively, coupled with First Consul Napoleon Bonaparte's victory at Marengo effectively forcing the Austrians to sign an armistice and ending the war.