Happening in the world: Amid high tension in the Korean peninsula, after the US warns North Korea that its “strategic patience” is over, North Korea detained Kim Dong-chul, a 62-year-old naturalized US citizen born in South Korea. (BBC)

Happening in the US: Us actress Erin Moran, best known for playing Joanie in sitcom Happy Days in the 1970’s has died at age 56. (BBC)

Happening in NYC: NYC celebrated Earth Day by clearing Broadway of traffic from 10 am to 4 pm, here are some photos of the events. (NBC New York)

Happening on campus: Matthew Casey wil be at Sulzberger Hall 3rd Floor Parlor, presenting his new book Empire’s Guest Worker, that discusses the “on-the-ground experiences of Haitian migrants in Cuba” and how their actions shaped “larger processes of US imperialism, economic penetration, race-making and shifts in global migration policies”.

Want to know how to write hit songs like The Chainsmoker, here is a tutorial:

 

image from creative commons