Earth Day celebration goes bi-coastal with Dipset rhymer.
Plus pics of Lupita Nyong'o, Nicki Minaj, Jay Z and more.
Happy 38th birthday to the trend-setting Harlem rapper.
Click on to see a list of third parties who have stepped in to help end brewing MC wars.
Michelle Obama, Dwyane Wade and Pitbull also celebrate this week.
Plus Rih Rih ain't sleep and Eddie Murphy reads a book.