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.
Prior to becoming the main Johns Hopkins campus, the Homewood estate had initially been the gift of Charles Carroll of Carrollton, a Maryland planter and signer of the Declaration of Independence, to his son Charles Carroll Jr.