Today, inexpensive fog machines are de riguer when it comes to creating a mysterious or creepy atmosphere. But that wasn’t always the case. Dry ice used to be the only practical way to produce a ...

The science pros at TKOR teach how to make dry ice using a fire extinguisher. California Democrats stage internal war over ...

It enters the dry-ice-making machine at high pressure: 300 pounds per square inch. There, some of the pressure is taken off. "When you take pressure off CO2, it turns into dry ice," Boese said.

In high school, the chemestry teacher worked really hard to be able to make dry ice. He had to wrangle with the gas vendor to supply a CO2 tank with a drop tube and then he had to get funding to ...