291 articles from TUESDAY 15.9.2020
Theoretically, two layers are better than one for solar-cell efficiency
Solar cells have come a long way, but inexpensive, thin film solar cells are still far behind more expensive, crystalline solar cells in efficiency. Now, a team of researchers suggests that using two thin films of different materials may be the way to go to create affordable, thin film cells with about 34% efficiency.
New research tool tracks political advertising on Facebook
Transparency in political ads is vital to ensuring safe and fair elections, but transparency is difficult if advertisers are not required to disclose details about targeting and sources of funding. While TV broadcasters must disclose information about political ads to the public, Facebook, which is used by nearly 70% of Americans and is a source of news for many users, faces no such federal...
Welsh seagrass meadow sows hope for global restoration
Project to revive climate-boosting wonder plant in Pembrokeshire could spur similar schemesSeagrass is a wonder plant but unrecognised and sorely neglected. This is a flowering plant with long ribbon-like leaves that often grows in the sea in lush underwater meadows.It is an unsung hero in the fight to clean up carbon dioxide and the climate emergency. Its credentials are astonishing: it absorbs...
NASA Missions Spy First Possible ‘Survivor’ Planet Hugging White Dwarf Star
Portal origin URL: NASA Missions Spy First Possible ‘Survivor’ Planet Hugging White Dwarf StarPortal origin nid: 464447Published: Tuesday, September 15, 2020 - 16:22Featured (stick to top of list): noPortal text teaser: An international team of astronomers using NASA’s Transiting Exoplanet Survey Satellite (TESS) and retired Spitzer Space Telescope has reported what...
The carcass of an extinct cave bear that's more than 22,000 years old was discovered in remote Siberia — the first and only find of its kind
Scientists found the cave bear carcass preserved in the Siberian permafrost. Until now, they had only unearthed bear...