The logistics are daunting. The U.S. government is investing in at least seven potential vaccines. At least one of them needs to be stored and transported at -80 degrees Celsius or -112 degrees Fahrenheit, a temperature at which antifreeze freezes and rubber shatters. Three others have to be stored at -20 degrees Celsius or -4 degrees Fahrenheit, the temperature ice cream is shipped at.
Click here for the whole article