Laughing gas may help treat depression

Laughing gas or nitrous oxide could be used as a treatment for severe depression in patients whose symptoms don't respond to normal therapies.

Nitrous oxide does not up heart attack risk during surgery

Nitrous oxide - best known as laughing gas - has been one of the world`s oldest and most widely used anaesthetics.

Laughing gas may have caused the end of Ice Age

It`s no laughing matter! Nitrous oxide commonly known as laughing gas may have brought the last great Ice Age to an end, a new research has found.