The world's most famous "school striker", Greta Thunberg, has held her last school strike for the climate. Ms. Thunberg, who's 20, graduated from high school last Friday. She says she'll continue to fight for climate action, she just won't be skipping school anymore.
Dr. Joseph Dituri, also known as "Dr. Deep Sea", has just finished an amazing adventure. For 100 days, the University of South Florida teacher lived in a small room underwater. He set a new world record, beating the old record of 73 days.
Four children have survived alone in Colombia's Amazon rainforest for 40 days. On May 1, their small airplane crashed. Somehow, the children managed to survive for over a month in the jungle before being rescued. The news that they're safe has brought joy to the entire country.
Last Sunday, the famous Champs-Elysees street in Paris was turned into a giant outdoor classroom for a special spelling event called "The Big Dictation". The event was a chance for people who love words to show off their listening and spelling skills in an unusual setting.
Scientists at the University of Massachusetts Amherst have invented a new way to make electricity. Their method uses super-tiny holes to make electricity from moisture in the air. The scientists hope the method will one day lead to cheap, clean electricity anywhere at any time.
On Sunday, hundreds of thousands of people protested in Poland against the country's right-wing government. The protest was the largest in Poland since the protests that led the country to become a democracy in 1989.
A group of scientists from the University of Kitakyushu in Japan has come up with an unusual solution to a messy problem. They've taken dirty diapers, and used them to replace some of the sand needed to build a house with concrete.
The Earth has just been sent a message from space. Now people around the world are trying to figure out what the message says. But the message wasn't from aliens. Instead, it's part of a project designed to see how humans might react if we did get a message from aliens.
In 2011, Gert-Jan Oskam was in a motorcycle accident that left him paralyzed below his waist. Now, thanks to special electronics in his brain and spinal cord, he can stand and walk, controlling these actions himself.
Scientists have created the first full-sized digital model of the Titanic. The project is the largest underwater scan ever made. The model will allow scientists to study the Titanic in ways that were never possible before.
On Monday, California, Arizona, and Nevada reached an agreement to cut back on the amount of water they take from the Colorado River. The plan represents progress in tackling the river's shortage of water. But stronger cuts will be needed to keep this important river from running dry.