Dartmouth College says progress is being made on two pressing campus safety issues: high-risk drinking and sexual assault. Philip Hanlon, who was inaugurated in September, told faculty members this week that the number of students treated for extreme intoxication --blood alcohol content above .25 percent--dropped from 80 in 2011 to 31 last year. Just five were treated this fall, compared to 29 in the fall of 2010. He also described efforts to train students to intervene as bystanders when they suspect sexual violence may occur, and ways the college is trying to improve the process for reporting assaults and support for victims. Hanlon says students overwhelmingly tell him the best way to improve student life is to create more diverse social options.