Steve Rosenberg finds out how to keep 40 miles of Moscow river clean.
She’s 78. She’s Muslim. She’s big on Instagram.
In an attempt to tackle air pollution China is planning on building what it says is the first forest city.
The president reportedly took part in a simulated underwater missile launch in the Atlantic.
Some believe the intercontinental ballistic missile tested on Tuesday could reach Alaska.
Across the United States, people have been marking Independence Day in their own ways.