Tiny Lab-Grown "Brains" Spark Big Ethics Debate

Scientists are growing pea-sized clusters of human brain cells in labs. These "brain organoids" are revolutionizing research into diseases like Alzheimer's and autism. But their use is creating unease. The organoids are not conscious. However, they are becoming more complex. This forces a major ethical debate. Experts are now asking urgent questions. At what point could research cross a line? How can science use these bits of living human gray matter responsibly? The goal is clear: to unlock medical breakthroughs without ignoring profound ethical concerns.