Mark Zuckerberg Mark Zuckerberg of Facebook, Sergey Brin of Google and venture capitalist Yuri Milner jointly establish the Breakthrough Prize in Life Sciences to reward excellence in life sciences with 11 individual prizes of $3 million.
2013 Bulgarian protests 2013 Bulgarian protests: Prime Minister of Bulgaria Boyko Borisov says he will resign with all his cabinet due to widespread protests amid a financial crisis.
Governor of the Northern Mariana Islands Governor of the Northern Mariana Islands Benigno Fitial resigns from office ahead of a Senate trial on 18 articles of impeachment. Lt. Governor Eloy Inos is sworn in as Governor. Senate President Jude Hofschneider takes office as the new Lieutenant Governor of the Northern Mariana Islands.
Georgian A United States federal grand jury in Georgia indicts four employees of bankrupt Virginia-based Peanut Corporation of America for the 2009 salmonella outbreak that killed nine people and infected hundreds. The 75–count indictment describes contaminated or misbranded food by company owner Stewart Parnell, his brother and company vice president Michael Parnell, and two company managers. The charges are conspiracy, wire fraud, and obstruction of justice. This infection triggered the most extensive food recall ever in United States history.
Jailed The jury sitting in the case of "R v Huhne and Pryce" fails to reach a verdict on Vicky Pryce regarding driving licence penalty points she accepted on behalf of her former husband, Chris Huhne, requiring a retrial.
Japanese Japanese whaling vessels clash with Sea Shepherd Conservation Society Neptune's Navy boats in the Southern Ocean with the MY "Steve Irwin" and MY "Bob Barker" sustaining damage.
David Cameron David Cameron, the Prime Minister of the United Kingdom, visits the Indian city of Amritsar to express remorse for the Jallianwala Bagh massacre on 13 April 1919.
Country's Estonia becomes the first country in the world to install a nationwide system of fast chargers for electric vehicles.
Marius Kloppers Marius Kloppers announces that he will resign as the CEO of the world's largest mining company BHP Billiton in May to be replaced by Andrew MacKenzie.
2013 BRIT Awards The 2013 BRIT Awards are held in London with Ben Howard winning best British male artist and British breakthrough act, Emeli Sande winning best British female act and album of the year for "Our Version of Events" and Mumford & Sons winning Best British group.