NEW evidence suggests that both cannabis and tobacco are associated with changes in brain volume, with a large meta-analysis identifying reduced amygdala volume among users, raising important questions about the long-term neurological effects of cannabis exposure. Cannabis and Brain Structure Background Cannabis is the most widely used illicit drug globally and is frequently co-used with...

Cannabis laws are quietly rewriting policy on how companies hire, manage risk and structure jobs, with surprising changes affecting American workers and careers in 2026. 

Altman says AI superintelligence is so close, so mind-bending, so disruptive that America needs a new social contract.