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.
Theresa May announced her resignation as British Prime Minister.
Alabama passed the Human Life Protection Act, enacting a near-total ban on abortions.
Singapore passed anti-fake news laws.
Kanye West claimed that African-American slaves in the US remained slaves by choice.
Crown Prince Naruhito became the Emperor of Japan following his father's abdication.
Indonesia announced plans to move its capital city from Jakarta due to the city sinking.
Climate change activist Greta Thunberg gave a speech in London, leading to protests across the city for four days.
Using gene therapy, eight babies suffering from ''bubble boy disease" were cured in Memphis, Tennessee.
The Notre Dame Cathedral in Paris caught fire, which destroyed the roof.
Julian Assange, the founder of WikiLeaks, was removed from London's Ecuadorian Embassy by police.
Dutch ecologists reported that wolves were living in the Netherlands again for the first time in 140 years.
Researchers discovered that as many as 600 million birds die in the US every year after flying into skyscrapers.
A Dutch art investigator recovered Pablo Picasso's stolen 'Buste de Femme' painting. It had been missing for 20 years.
The first kidney transplant between two persons with HIV occurred in Boston, Massachusetts, US.
A woman in Bangladesh gave birth to twins one month after giving birth previously.
Queen Elizabeth II published her first post on Instagram.
The world's smallest baby was finally released from the hospital months after being born.
US Democrat Senator Bernie Sanders announced his second attempt to run for President.
Mexican drug lord Joaquín aka 'El Chapo,' was finally brought to justice.
Alcohol poisoning killed 144 people in the states of Uttarakhand and Uttar Pradesh, India.
Forty mummies were discovered and unearthed in Tuna el-Gebel, South Cairo, Egypt.
China's Chang'e-4 became the first spacecraft to successfully land on the far side of the Moon.
Same-sex marriage became legal in Austria.
A powerful tsunami hit Indonesia.
The 2018 partial shutdown of the US federal government began.
