The air pollution in Mexico City has gotten so bad that the mayor called an emergency. Schools were closed on Thursday and Friday. The emergency was finally ended on Saturday.
Published in “North America”
In elementary school, Glenn Cameron was very aware of the challenges faced by his friend, who was missing a hand. Now Mr. Cameron has built a robotic hand that can be controlled by a human brain.
In recent weeks, Congress has requested a lot of information from people connected to the White House. The White House has refused. The conflict could test the US constitution and wind up in the US courts.
Many drivers of the ride-hailing companies Uber and Lyft stopped work on Wednesday. The strikes came as both companies are getting a lot of attention and making big changes in the way the world gets around.
A dinosaur skeleton found by a teenager over 20 years ago has led to the naming of a new dinosaur related to the Tyrannosaurus rex. The boy who made the find is now grown and is the lead scientist.
Since the 1970s, people in many countries have been taught to recycle. Now, many places are cutting recycling programs, and often items that are sent off for recycling are never recycled at all.
For years, meat substitutes haven't gotten much attention. Now, with more interest in planet-healthy choices and the improved quality of meat substitutes, they appear to be hitting the big time.
Floods have forced thousands of people in Eastern Canada to leave their homes. The cities of Ottawa and Montreal have declared an emergency, and Canada's army has been called in to help.
Mitsuhiro Iwamoto has been blind since he was 16. He wanted to prove that his blindness didn't limit what he can do. Last week Mr. Iwamoto became the first blind person to sail non-stop across the Pacific Ocean.
National Park Week ends tomorrow with National ParkRx Day. Doctors and other health care workers are joining with parks in the US, and encouraging people to get out and enjoy nature. They believe it's as good as medicine.
Scientists have found a way to use brain signals to make a computer speak the words a person is trying to say. Their method could one day help people who have lost the ability to speak.