New study reveals how Photonic Integrated Circuits could reduce data centre energy consumption by replacing electrons with light particles.

Data centres consume huge amounts of energy – and generate plenty of heat in the process. In Sweden, thousands of households are already heated with server heat. Could this be a potential source of clean energy?

What if the heat from, say, server farms or subway tunnels can be used to warm homes? Waste heat recovery technologies seek to close the energy loop.

Although the toxic fumes they emit pose a serious health threat, open fires are still a common site in homes in resource-limited countries. Now Fraunhofer IBP has developed a new low-tech furnace that allows you to heat your home by burning trash - with absolutely no risk to human health or the environment. 

A new collaboration by several major institutions has produced the Food Loss Climate Impact Tool. It hopes to drive a more equitable and efficient global food system.

Deep Green uses waste heat from its data centres to heat swimming pools, reducing their carbon emissions and keeping them afloat as energy costs soar.

Global food waste and its management is a far-reaching problem with tremendous financial, ethical and environmental costs. The causes range from bumpy roads to overly-selective customers, but regardless of cause, we can all pitch in to combat this global issue.

Solar panels only have a lifespan of around 25-30 years, and the vast majority end up in landfill. French start-up ROSI is developing a way to recycle them with the help of EU funding.

It sounds too good to be true. But more and more venues and companies are finding ways to turn body heat into usable energy.