Scientists develop transparent wood ‘five times more thermally efficient than glass’

The new material, which uses wood from the fast-growing, low-density balsa tree, proves to be more durable and lighter than glass, according to research

Solar-powered waterless toilet to be unveiled in India

A revolutionary toilet that doesn’t require any water and is fuelled by the sun is set to be unveiled in India this month. Designed and built using a $777,000 (£467,299) grant from the Bill & Melinda Gates Foundation, the waterless toilet uses innovative technology that heats human waste to a high enough temperature to sterilise […]