Breakthroughs in Alzheimer's Research: Reversal and Recovery Hope

This week in science features a promising Alzheimer's drug tested in mice, a new theory about the purpose of the Bayeux Tapestry, the discovery of three colliding galaxies, insights into lactose tolerance in South Asian populations, a theoretical model explaining particle mass through extra dimensions, and advances in understanding schizophrenia and bipolar disorder using lab-grown mini-brains.