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.
Canada's western provinces are being hit hard by wildfires. Alberta has been hit especially hard. The fires have forced thousands of people to leave their homes, and heavy smoke from the fires has spread far beyond the region.
If you've ever seen elephant seals lying on a beach, you might think all they do is sleep. But now scientists have discovered that when elephant seals are in the ocean, they hardly sleep at all. On average, the seals sleep just two hours a day.
The US Environmental Protection Agency has suggested new rules for limiting the amount of pollution that power plants running on coal and gas can release. The new rules would almost completely end carbon dioxide emissions from these power plants by 2035.
On Sunday, Thailand and Turkey held important elections that could lead to big changes for the countries. In Thailand, opposition parties clearly defeated the current military government. In Turkey, the close results have led to a runoff election.
Scientists have created a new tool that can turn people's thoughts into words. It works by using an Artificial Intelligence program to translate brain activity into words. The scientists say the program could help people who can't speak because of a brain injury.