Like many wonderful and useful scientific things, nitrous oxide was discovered by accident in 18th-century England, and much later (during the '30s and '40s) it was used by dentists as an anesthetic.

Dr Catherine Conlon examines the risks of nitrous oxide use, as doctors warn it can cause life-changing nerve damage in young ...

Days after Government deputies voted to postpone for nine months the second stage of Sinn Féin’s bill on the Sale of Nitrous ...