PM Roundup: Downeaster's Ridership Record; Cameras In Salem Parks?

Other stories (and links) circulating around the newsroom this afternoon:

-- Amtrak's Downeaster, which makes five daily trips between Portland and Boston, set another ridership record. [Associated Press, via the Boston Globe]

-- Dozens of vehicles were keyed in Boston's Back Bay. [NECN]

-- Seeking to improve public safety, Salem city councilors have proposed installing cameras in public parks. [WBZ-AM]

-- A study by researchers at Tufts University concludes that the United States approves new cancer drugs more frequently than European countries. [Tufts]

-- Patriots tight end Rob Gronkowski posed for the cover of ESPN The Magazine's "body issue." [MassLive]

-- WBUR launched an online experiment today using Tumblr — Kind World.