You know how when you're wearing a protective suit to keep you from getting infected with the biohazardous waste that you work with on a daily basis you get all sweaty? Yeah, me either. But apparently the material that the suits are made of aren't exactly breathable, as you don't want anything getting in or out that could do some damage.
Well, science to the rescue. A new material will let sweat pass right on through while keeping toxins out. This works because water molecules are smaller than the toxic chemicals, so the microscopic channels lining the suits can filter them out. Other uses for the material may include desalinating seawater and purifying contaminated water. It almost makes you want to start working around dangerous materials! Almost.