On this day — April 20

It explodes four minutes into flight.

Derek Michael Chauvin: Derek Chauvin is found guilty of all charges in the murder of George Floyd by the Fourth Judicial District Court of Minnesota.

oil prices drop below zero, an effect of the 2020 Russia-Saudi Arabia oil price war.

Ya'an, in China's Sichuan province, killing at least 193 people and injuring thousands.

killing eleven workers and beginning an oil spill that lasted six months.

William Phillips barricades himself with a handgun in NASA's Johnson Space Center in Houston, Texas before killing a male hostage and himself.

killing four workers.

Eric Harris and Dylan Klebold kill 14 people and injure 23 others before committing suicide at Columbine High School in Columbine, Colorado.

Colombia, killing all 53 people on board.

Animal Liberation Front rescues 467 animals being tested in a lab at University of California, Riverside in Riverside, California, causing $700,000 in damages to the laboratory in advocation for Animal rights.

Apollo 16 Lunar Module, commanded by John Young and piloted by Charles Duke, lands on the Moon.