ChemistryOld milk can be used to extract gold and other metals from e-waste To extract valuable metals from discarded computer motherboards, researchers have developed a gold-absorbing material made from old milk 51¶¯Âþ
EnvironmentAnimal bones ground into an edible paste could help reduce food waste A Finnish start-up has developed a method of grinding up chicken or fish bones into a nutritious paste to make meat production more efficient. 51¶¯Âþ conducted a taste test with mixed results 51¶¯Âþ