A new thermogalvanic device uses nanoparticles to control ion flow, allowing it to convert waste heat to electricity and store the energy without external batteries. (Nanowerk Spotlight) Heat is ...

At the heart of the technology, a form of hydrovoltaic energy harvesting, is how evaporating water flows through the porous structure of nut shells. As the water moves, it transports electrically ...

Manaus is one of the top generators of solid waste among Brazil’s state capitals, with an average of 1 kilogram (2.2 pounds) of garbage per resident every day. The problem affects all of Amazonas ...

Nkweauseh Reginald Longfor works at Sophia University. Many African cities still struggle with litter and garbage that is not properly disposed of. This poses serious public health risks. It attracts ...