Public policy is built on the food desert theory: the lack of neighborhood supermarkets drives people to eat less fresh food and more junk food. New research is challenging that theory, but finding values of grocery stores in other, unexpected places. Experts discuss how nearby supermarkets change people and the neighborhoods where they live.
Thirty years of research has shown that teenagers’ biology prevents them from getting to sleep much before 11pm, and with most high schools starting classes around 8 am, they are chronically sleep deprived. Experts discuss how students and even the economy would benefit and why many school districts still oppose the change.
The day at secondary schools begins around 8 am but research says biological sleep schedules of teens are about two hours behind the rest of the population. Even still opposition to starting the school day later remains.
Self-driving cars are being developed more rapidly than most experts thought possible. But even if they’re technically possible, can we be assured of their safety?