They have thick, dark-green skin and a wide base which tapers to a point. Poblano peppers are mild to medium-hot. Poblano peppers register between 1,000 and 2,000 Scoville heat units on the Scoville Scale.
You can look at crime mapping (well, in 14-day chunks) by neighborhood at http://141.157.54.34/bpdmaps/police.htm. JHU's main (Homewood) campus is in the Northern district. Abell, Charles Village, Guilford, Hampdon, and JH Homewood are all neighborhoods near campus. Most of those seem relatively safe, but it might be a good idea to compare if you're looking for a place to live.
Asthma & Allergy Center, Johns Hopkins Bayview Medical Center, 5501 Hopkins Bayview Circle, Baltimore, Maryland, October 2007. Photo by Diane F. Evartt. Johns Hopkins Hospital, 600 North Wolfe St., Baltimore, Maryland, July 2012. Photo by Diane F. Evartt.