California Scientists at California's Stanford University invent a working bionic eye powered only by focused light. Though currently a prototype, the device could eventually restore the sight of millions of people suffering from eye diseases such as macular degeneration and retinal pigmentosa.
Republican Party American Republican politician Ron Paul states he will be ending his active presidential campaign bid. However, he will still try to secure delegates before the Republican National Convention in August.
Greece A fourth successive attempt by major Greek political parties to form a coalition government ends in failure. Another attempt is scheduled for May 15; if a coalition cannot be agreed, emergency elections must be held in June.
News Corporation scandal Entertainment manager Louis Walsh seeks access to documents which allegedly show that Murdoch's tabloid "The Sun" paid €700 to a man who made, in a high profile case, what turned out to be a false sexual assault accusation against Walsh. The senior counsel for Walsh tells Ireland's High Court: ""The Sun" directed the operation to take out Louis Walsh as a public person."
Tony Blair's former Director of Communications, Alastair Campbell, tells the Leveson Inquiry that there was no "express deal" between Blair and News Corporation CEO Rupert Murdoch in the run-up to the 1997 UK general election.
State of Palestine Over 1,500 Palestinian prisoners in Israeli prisons end their mass hunger strike after reaching an agreement with Israeli authorities in an Egyptian-mediated deal.
President The President of South Korea, Lee Myung-bak, commences the first official visit by a South Korean leader to Myanmar since 1983, when North Korean commandos attempted to assassinate the then-President, Chun Doo-hwan, in a bomb attack.
Magnitude A 6.2-magnitude earthquake strikes the Peruvian–Chilean border, causing power cuts but no serious immediate damage. No casualties have been reported.
Agni Air An Agni Air flight carrying 21 people crashes while trying to land at Jomsom Airport in mountainous northern Nepal. 15 people are reported dead.
Air India An Air India pilots' strike enters its seventh day, with the airline cancelling 13 international flights.
Syrian uprising (2011–present) Syrian uprising: At least 30 people die in a battle between Syrian government forces and rebel fighters in the town of Rastan. Reportedly, 23 of the dead are government soldiers.