"Sometimes when trees get really stressed out and overheated, they will produce excess amounts of sap," he added. In short, ...

Cork is obtained by stripping the bark of cork oak trees every nine years in a careful process that allows the tree to ...

Cork is obtained by stripping the bark of cork oak trees every nine years in a careful process that allows the tree to regenerate and grow A scale model of a prototype house using cork as thermal ...

Cork is obtained by stripping the bark of cork oak trees every nine years in a careful process that allows the tree to regenerate and grow - Copyright GETTY IMAGES ...