It turns out the time of day -- or year -- an asthma test takes place can affect its accuracy, a new study says. #asthma ...

A vast number of chemicals are registered for production and use around the world. But only a portion have been thoroughly ...

What happens when science fiction meets real-world engineering? We put a functional Mass Effect-style plasma rifle to the test. Does it fire like in the games, or is it just a cool prop?

A lung function test used to help diagnose asthma works better in the morning, becoming less reliable throughout the day, ...