A gunman killed two members of a television news crew in the United States earlier this week.
The expression “a thirst for knowledge” may soon have a new meaning for millions of people who have no way to get clean water.
The social media company Facebook has opened its first African headquarters in Johannesburg, South Africa.
In the United States, a company is working on a project that could change the way we think about public transportation.
Scientists who study the sun watch for sunspots — violent storms that can affect communications, navigation systems and even electric power stations on Earth.
A team of scientists has found a surprise element to the social structure of baboons: democracy.
A plane that uses only solar power landed on the island of Oahu, Hawaii on Friday after being flown across the Pacific Ocean.
For many years, machines have been doing work that people once did, including some difficult jobs.
Scientists say sea levels are rising and will continue to do so into the future.
A three-person crew has returned to Earth after more than six months on the International Space Station.