Stanford researchers have created mice with human brain cells comprising nearly half their brain volume, advancing research into brain injuries while raising ethical questions about such experiments. Meanwhile, MIT Technology Review's annual list of 35 innovators under 35 highlights nine climate tech pioneers developing innovations in lithium extraction, steel production, energy-efficient AI, and waste conversion.
A new study suggests the Sun may have engulfed a super-Earth-sized planet early in its history, leaving behind detectable chemical and structural signatures still visible today. Researchers modeled the Sun's evolution and found that planetary ingestion could explain discrepancies between standard solar models and observations, including the Sun's depleted lithium abundance and unusual internal structure.