A hot carrier solar cell includes the absorption layer, the extraction layer, an energy selective contact, and the actual contact. Experiments showed the presence of a barrier inhibiting carrier extraction, as indicated between the absorption layer and the extraction layer, which are both n-type. Credit: Journal of Photonics for Energy (2024). DOI: 10.1117/1.JPE.15.012502 Hot carrier … Read more
OpenAI has launched advanced voice mode for audio chats with ChatGPT. Jordan Novet, CNBC ChatGPT is ready for more natural audio chats. OpenAI said Tuesday that its popular chatbot now has an advanced voice feature for people who pay for the premium service. The tool allows for more fluid conversations. The release will continue through … Read more
Credit: Pixabay/CC0 Public Domain Large amounts of the food we produce do not end up in our stomachs, but in landfills, sewers, or elsewhere. According to the UN, in 2022, this was the fate of 1.05 billion tons of food, which ended up as food waste—corresponding to approximately 132 kg per capita in the world. … Read more
Credit: Unsplash/CC0 Public Domain The huge and growing toll bottled water is taking on human and planetary health warrants an urgent rethink of its use as 1 million bottles are bought every minute around the globe, with that figure set to rise further still amid escalating demand, warn population health experts in a commentary published … Read more
The paramotorist team in the Peruvian desert. Left to Right: Márcio Aita Júnior, Mike Campbell-Jones and Senderson Laurido. Credit: Mike Campbell-Jones In an innovative paper published today in the journal Plants, People, Planet, scientists from the Royal Botanic Gardens, Kew, Huarango Nature and paramotorists from Forest Air, highlight the exciting potential of paramotoring as a … Read more
An artistic rendering depicts direct writing using ORNL’s synthescope, a novel microscopy technique, to continuously insert tin atoms into graphene, opening possibilities for materials fabrication atom-by-atom. Credit: Ondrej Dyck/ORNL, U.S. Dept. of Energy A new technology to continuously place individual atoms exactly where they are needed could lead to new materials for devices that address … Read more
Caroline Ellison, the star witness in the prosecution of her former boyfriend, FTX founder Sam Bankman-Fried, was sentenced Tuesday in New York federal court to two years in prison and ordered to forfeit $11 billion for her role in the massive fraud and conspiracy that doomed the cryptocurrency exchange once valued at $32 billion. The prison … Read more
One of the world’s largest e-commerce companies is emerging as a top pick on Wall Street as investors look for tech opportunities beyond the Magnificent Seven. MercadoLibre, an Argentinian e-commerce and payments platform that’s incorporated in Delaware and actively traded on Nasdaq, is up 34% in 2024, compared to a roughly 27% rise for Amazon, … Read more
Credit: Pixabay/CC0 Public Domain “Stranger churches”—Protestant congregations that welcomed speakers of certain languages other than English—in early modern London had “eyes everywhere” to hear, spread and dispel gossip in multiple languages, according to new research. The Elizabethan era saw large numbers of migrants coming to England, many of whom were Protestants fleeing religious persecution and … Read more
Nvidia CEO Jensen Huang talks onstage with Salesforce CEO Marc Benioff during Salesforce’s Dreamforce on September 17, 2024 in San Francisco, California. Justin Sullivan | Getty Images News | Getty Images Nvidia CEO Jensen Huang is done selling the chipmaker’s stock for the time being, cashing in more than $700 million under a prearranged plan. … Read more
