* World: The fortieth anniversary of Earth Day was celebrated worldwide on Thursday as organizers claimed that one billion people participated in diverse activities.
* U.S.: Eleven workers are missing after an oil rig exploded and sunk in the Gulf of Mexico.
* Africa: According to UNICEF sixteen African countries are facing a measles outbreak that has so far killed 185 people.
* Thailand: Tensions remain high between anti-government protestors and police after several grenade attacks led to the deaths of at least three people.
Image – CBC
Online Sources- AP, BBC News, ABC News, MSNBC