On June 15

American acrobat Nik Wallenda became the first person to walk a tightrope stretched directly over Niagara Falls.

US president George W. Bush designated 140,000 square miles (360,000 km2) around the Northwestern Hawaiian Islands as the Papahānaumokuākea Marine National Monument, now one of the world's largest protected areas.

Leaders of China, Russia, Kazakhstan, Kyrgyzstan, Tajikistan and Uzbekistan formed the Shanghai Cooperation Organisation.

The Troubles: The Provisional Irish Republican Army detonated a truck bomb in the commercial centre of Manchester, England, injuring more than 200 people and causing widespread damage to buildings.

Western Greece was struck by an earthquake registering 6.4–6.5 Mw that killed 26 people.

The eruption of Mount Pinatubo in the Philippines deposited large amounts of particulate matter into the atmosphere, enough to lower global temperatures by about 0.5 °C (0.9 °F).

King Hussein of Jordan married American Lisa Halaby, who became known as Queen Noor of Jordan (pictured).

World War II: The United States Army Air Forces began the first air raid of its strategic bombing campaign against the Japanese archipelago, although little damage was caused.

Bessie Coleman (pictured) became the first Black person to earn an international pilot's license from the Fédération Aéronautique Internationale.

Three African-American circus workers were lynched by a mob in Duluth, Minnesota, a crime that shocked the country for having taken place in the Northern United States.

An earthquake registering 8.5 Mw and subsequent tsunami struck Japan, killing at least 22,000 people and destroying about 9,000 homes.

Eadweard Muybridge took a series of photographs to prove that all four feet of a horse leave the ground when it gallops (animation pictured), which became the basis of motion pictures.

The shooting of a pig in the San Juan Islands led to the so-called Pig War over the border between the United States and British North America.

War of the Second Coalition: The signing of the Convention of Alessandria brought temporary peace between France and Austria.

Pope Leo X issued the papal bull Exsurge Domine, censuring 41 propositions from Martin Luther's Ninety-five Theses and subsequent writings, and threatening him with excommunication unless he recanted.

King John of England and a group of rebel barons agreed on the text of Magna Carta, an influential charter of rights.