Researchers tested standardized oral THC in 171 adults with PTSD-related nightmares. THC reduced nightmare frequency and intensity remission rates vs placebo.

Genetics may influence how people respond to some traumatic experiences more than others, particularly in childhood, data from 144,000 people in the UK suggest

Political rhetoric by members of US Congress has become more partisan and negative as social media usage has increased, with this growth in partisanship disproportionately driven by Republicans, finds

Grand Canyon rocks preserve a 1.2-billion-year record of Earth–Moon interactions, allowing scientists to trace how the Moon's orbit and Earth's rotation have evolved over deep time.

How tiny balls of human brain tissue are revealing the causes of childhood epilepsy — and possible treatments