A nitrogen leak during a cryotherapy session at a Paris gym killed a 29-year-old woman and critically injured another.

Equipment: A flashlight connected in series with a wire coil, a small (~2L) dewar of liquid nitrogen, safety goggles and safety gloves. What it does: When the coil is at room temperature, the ...

confirmed that the leaked gas was nitrogen. The administration assured nearby residents that the situation was under control. Authorities have also ordered a safety inspection of the acid factory ...