The 70th anniversary of NATO was marked by a gathering in London of world leaders, followed by a reception by Elizabeth II at Buckingham Palace.
A wooden relic thought to be from Jesus's manger was returned to Bethlehem.
The 400th anniversary of the end of the Transatlantic Slave Trade was celebrated with the 'Year of Return' in Ghana.
The world's largest luxury goods corporation, Louis Vuitton (LVMH), bought jeweler Tiffany & Co. for $16.2 billion.
Snake fossils found in Rio Negro Province, Argentina, showed snakes with hind legs that lived over 70 million years ago.
The Brazilian Space Agency announced that the country's Amazon rainforest had suffered its biggest spike in deforestation in over a decade.
A 55-year-old man became the first known person to contract COVID-19.
The city of Havana, Cuba, celebrated its 500th birthday.
Iran claimed to have found over 50 billion barrels of oil in the country's Khuzestan province.
462 non-violent inmates were released from Oklahoma prisons in the largest commutation in American history.
Forty-two people were buried alive in a landslide in Bafoussam, Cameroon.
Actor Wes Studi received the Governor's Award Oscar for Lifetime Acting Achievement, making him the first Native American to do so.
Major Australian newspapers blacked out their front pages in protest against press restrictions on printing whistleblower stories.
The oldest natural pearl discovered off the Abu Dhabi coast was estimated to be 8,000 years old.
The first all-female spacewalk took place.
A camera in London Zoo became the first camera to take selfies powered by plants.
The state of California became the first to ban fur products.
Three thousand five hundred women in Iran were allowed to attend a soccer match for the first time in 40 years.
Protestors took to the streets in Hong Kong after the government announced a ban on face masks.
The World Health Organization announced that they would give measles vaccinations to 800,000 children in the Democratic Republic of the Congo.
Widespread forest fires in Indonesia caused the skies to turn red.
The American Bird Conservancy released a study indicating that the bird population in North America had reduced by around 3 billion.
The New York Times published an investigation declaring Guantanamo Bay Prison as the most costly prison in the world.
Personal information of Ecuador's entire population (16.6 million) became available online on an unsecured cloud server in Miami.
The UK's prime minister Boris Johnson compared himself to The Hulk in his efforts to steer the country out of the European Union.
NASA revealed that water vapor was discovered in the atmosphere of an Earth-size planet, the exoplanet K2-18b.
The Indian Space Research Organization's Vikram Moon lander crash-landed on the moon.
74-year-old Erramatti Mangamma became the world's oldest mother after giving birth to twins in India.
Nature magazine published findings of a 3.8-million-year-old skull found in Ethiopia, which questioned our previous theories of human evolution.
Indonesia announced they plan to move their capital city from Jakarta to Borneo.
American explorer Victor Vescovo became the first person to journey to the deepest points of every ocean.
Russia launched a robot called FEDOR to the International Space Station to work as a remote operator and carry out various tasks autonomously.
NASA announced they would send a ship to Jupiter's moon, Europa, to look for extraterrestrial life.
A funeral was held in Iceland for the loss of the Okjökull glacier.
President Donald Trump announced that he might want to buy Greenland and claim it for the US.
More than 1,200 tin homes were destroyed after a fire broke out in the Chalantika slums of Dhaka, Bangladesh.
A rainfall survey named 'It is raining plastic' announced that tiny plastic particles were found in 90% of rain samples in Colorado, US.
Thousands of anti-government protesters disrupted Hong Kong International Airport.
Floods swept through India, killing over two hundred people and displacing one million.
In Tanzania, people attempted to siphon petrol from an overturned fuel tanker which exploded.
The Department of Health in Manila, Philippines, declared a national epidemic after the dengue outbreak.
French inventor Franky Zapata crossed the English Channel on a hoverboard.
Kenyan cancer survivors protested in Nairobi.
The UK had its hottest day on record.
The 9/11 victim compensation fund was extended indefinitely by the US Senate.
Due to climate change, a deadly heatwave landed in North-East America.
Japanese whaling ships officially resumed activities after a thirty-one-year hiatus.
Donald Trump became the first US president to visit North Korea while meeting Kim Jong Un.
Toy Story 4 premiered at the El Capitan Theatre in LA, California.
More than 100,000 people attended a vigil in Hong Kong to commemorate the Tiananmen Square Massacre.
