Energy & Green Tech

New material pushes sodium-ion batteries to phase out costly lithium

With lithium prices over five times higher than they were a year ago, researchers from Skoltech and Lomonosov Moscow State University have developed a material for sodium-ion batteries that offer an alternative to the increasingly ...

Energy & Green Tech

Researchers create highest efficiency 1-sun solar cell

Researchers at the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) created a solar cell with a record 39.5% efficiency under 1-sun global illumination. This is the highest efficiency solar cell of ...

Business

Twitter, in possibly last quarterly report, sees user growth

Twitter's quarterly profit, revenue and the number of daily users on its platform are rising but its quarterly report, released days after agreeing to be sold to billionaire Elon Musk, offered scant details about what it ...

Business

Disney streaming booms as theaters grapple with pandemic

US entertainment giant Disney said Thursday its online streaming services have boomed while it grapples with how to release films as the Delta coronavirus variant drives viewers from movie theaters.