Battery-swapping station The first battery-swapping station in Israel for electric cars is inaugurated by Better Place; over 1,000 charging stations for the cars are already in place.
John Milnor Mathematician John Milnor wins the 2011 Abel Prize for his contributions to topology, geometry and algebra.
California Governor The Governor of the US state of California Jerry Brown signs off on billions of savings to the budget but acknowledges that billions more in savings or revenue increases need to be found to resolve the ongoing budget crisis.
Australian Australian Prime Minister Julia Gillard is among the MPs to have been revealed in the latest MPs' interests register to have received gifts, including iPods and concert tickets, from Bono.
Moriarty Tribunal Mr Justice Moriarty judges that Michael Lowry and his associates "went to great lengths" to cover up payments of thousands and then to mislead the tribunal.
Journalist Sarah Carey uses her column in "The Irish Times" to call her lies to the tribunal a "black spot on my record" amid calls for her to be immediately dismissed by the newspaper.
Libertas founder and chairman Declan Ganley urges Michael Lowry to resign, calling it "embarrassing for Ireland to have someone like that in Dáil Éireann".
Michael Lowry Former government minister Michael Lowry refuses to resign the seat he recently claimed back in Dáil Éireann in the aftermath of the Moriarty Tribunal's findings that he assisted billionaire businessman Denis O'Brien "beyond doubt" in gaining a mobile phone license for Esat Digifone, in actions judged "disgraceful and insidious" by the tribunal. Taoiseach Enda Kenny admits Fine Gael accepted a donation worth thousands of dollars from Esat at the time.
Two girls Two girls (11 and 8 years old) were brutally murdered in their home in Krailling, Bavaria (Germany).
Sian O'Callaghan British Police find the body of 22-year-old Sian O'Callaghan in Oxfordshire, five days after she went missing in Swindon, Wiltshire. A 47-year-old man is arrested on suspicion of murder and police are also searching for the body of an unnamed missing woman who is feared to have been murdered.
Delroy Grant Serial rapist Delroy Grant is convicted of 18 sexual assaults and rapes in London, England, with fears that he may have committed hundreds of offences.
U.S. Arms Export Control Act Lian Yang, a US citizen, pleads guilty to conspiring to violate the Arms Export Control Act by trying to sell radiation-hardened" military and aerospace technology to the People's Republic of China.
Western Pacific Several governments in the Asia-Pacific region including Australia, Hong Kong and Singapore ban the import of food from areas near the Fukushima I Nuclear Power Plant following the recent incidents.
Tasmania Thousands of people are stranded by flash flooding in Tasmania, amid record falls of rain. Roads are closed, blackouts occur and people are flown away in helicopters.
Burma Two large earthquakes are recorded in northeastern Burma near the borders with Laos and Thailand, killing at least two people.
Africa Carbon Exchange The Africa Carbon Exchange, Africa's first carbon exchange which will trade in carbon credits a form of carbon pricing, opens in Kenya.
U.S. A U.S. federal district court in Delaware rules in favor of Cephalon, a phamaceutical company, in a patent infringement lawsuit it had brought against a manufacturer of generic drugs.
United States Census Bureau The United States Census Bureau confirms that New York City is the largest city in the US with 8,175,133 residents at the time of the 2010 United States Census on April 1.
British Army Two British soldiers from the 1st Battalion Irish Guards are killed fighting in Afghanistan's Helmand province.
South Korea South Korea issues a report into the sinking of the ROKS "Cheonan" criticising the readiness of the Navy.
Israeli Air Force The Israeli air force launches early morning airstrikes on smuggling tunnels along Gaza-Egypt border as well as a Hamas training camp in Gaza following Palestinian militants' rocket attacks against Beersheba and Ashkelon, Israel.
Coalition air strikes on targets in Tripoli, Libya, continue for a sixth day in an effort to destabilize Gaddafi's government.
Representatives of Muammar Gaddafi and his opponents in the Libyan rebel movement have been invited to attend a Friday African Union meeting in Addis Ababa, Ethiopia.
The Syrian government pledges a series of reforms in response to the unrest, including lifting the state of emergency law and allowing other political parties.
Witnesses and rights activists say Syrian government security forces killed at least 15 anti-government protesters in Daraa, bringing the death toll for the week to 21.
Protest in Jordan sees 500 March in Jordan's capital Amman demanding the removal of prime minister Marouf al-Bakhit and other reforms.