This week's research roundup looks at a new $5.5 million Å·ÃÀ¿Ú±¬ÊÓƵ Boulder study on the impact of marijuana legalization; a groundbreaking female solar observer being brought to light with new research; the de-policing efforts in Ferguson, Missouri; and a rash of earthquakes in Å·ÃÀ¿Ú±¬ÊÓƵ and New Mexico thought to be caused by wastewater disposal.