A new study found that generative AI often gives undergraduate essays higher grades than human markers, raising concerns about using AI to evaluate student performance. Researchers tested 50 bioscience essays and found significant differences between human and AI grading, including one case where the scores differed by 40 points. AI tended to inflate grades for weaker essays while sometimes lowering scores for stronger work, making it unreliable as a substitute for human judg

Brain-computer interfaces could restore movement, communication, and control of assistive technologies, but the article warns that the same systems may later be used for productivity and cognitive enhancement. If access depends on wealth, geography, insurance, infrastructure, language, or neural-data availability, BCIs could divide people by physical and cognitive capability rather than internet connectivity alone. Even non-invasive devices may remain expensive, place their s