Month: January 2021

Schematic structure of the tandem solar cell stack in 3D. Credit: Eike Koehnen/HZB Solar cells made from a combination of silicon and a complex perovskite have reached a new milestone for efficiency. The new tandem devices, made by Steve Albrecht and colleagues at the Helmholtz-Zentrum Berlin, Germany, have a photovoltaic conversion efficiency (PCE) of 29.15%,
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We might not be experiencing the pain of a yellow mustard spill at a Mets game or boozy date nights involving Cabernet, but quarantine stains hit differently. Our first world problems seem magnified in lockdown. Something as small as spilled coffee on your favorite sweats to kitchen mishaps from a TikTok recipe can reveal just
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John Stephens, the outgoing CFO of WarnerMedia parent AT&T, defended the company’s move to release its 2021 film slate concurrently on HBO Max and in theaters and cited Warner Bros. century-long relationship with Hollywood talent — with some disgruntled at the move and the way it was communicated. “We’ve got a long history of working
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WASHINGTON — NASA has selected four small astrophysics missions for further study, although the agency cautions that not all may ultimately be flown. NASA announced Jan. 7 it selected three smallsat missions and one high-altitude balloon mission as the first in its new Astrophysics Pioneers program. The program, established last year, is intended to support
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