When Ebola spread through West Africa in 2014, a global network of researchers faced what appeared to be an impossible task.
The vaccine they planned to use would have to be kept very cold: about -80 degrees Celsius, or four times more chilly than a household freezer.And they had three months to find a solution. The Arktek is an esky with such good insulation that it could be packed with ice and left in the blazing desert sun for up to a month without dropping a degree.
The design uses vacuum barriers, fibreglass and shiny internal coatings to reduce heat transfer between the warm outside and cold inside."Our design was extremely leak tight," Mr Lieberman said.
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