https://www.siliconvalley.com/2020/11/22/the-next-big-covid-challenge-keeping-vaccines-cold/ > Some are bigger than the fridge in your kitchen. Others are as small as the cooler you lug to the beach. > They’re way colder than the Arctic, in extremely high demand and absolutely essential for getting the first wave of some coronavirus vaccines — “the proverbial light at the end of this very long, dark tunnel,” as Gov. Gavin Newsom said — from the manufacturer into the bodies of those who need protection.