An auction house employee attaches the leg to the skeleton of an Eohippus, during the press preview of a forthcoming sale at Summers Place Auction House in Billingshurst, England
An attendee with a campaign sticker on her phone takes video as Senator Bernie Sanders as he speaks during a rally at Boardwalk Hall in Atlantic City, New Jersey
A Sotheby’s employee holds the Lesedi La Rona Diamond in New York City. The diamond the size of a tennis ball that is the largest discovered in more than a century could sell at auction for more than $70 million. Sotheby’s says it will offer the Lesedi la Rona diamond in London on June 29
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Republican presidential candidate Donald Trump and his wife Melania Trump arrive to speak to supporters at Trump Tower in Manhattan following his victory in the Indiana primary
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With his family by his side, Republican presidential candidate Sen. Ted Cruz (R-TX) speaks during his election night watch party at the Crowne Plaza Downtown Union Station where he announced he was suspending his bid for the Republican presidential nomination
Sheriffs on horseback and police break up a group of demonstrators outside Republican U.S. presidential candidate Donald Trump’s campaign rally in Costa Mesa, California.
Photographers in the press pen as Prime Minster David Cameron welcomes US President Barack Obama to Downing Street
Republican U.S. presidential candidate Donald Trump’s hand is seen as he reacts during a campaign event in Harrisburg, Pennsylvania
Democratic presidential candidate Hillary Clinton arrives at a campaign stop in Philadelphia
A Secret Service Agent stands guard as Democratic presidential candidate Hillary Clinton speaks at the Corsi senior center, in New York
Demonstrators demanding an increase in the minimum wage to $15-dollars-per-hour prepare to march in the streets on Thursday in Chicago, Illinois. The demonstrators marched to and protested in front of several locations during a day-long effort to draw attention to low-wage jobs
Attendees cheer for Senator Ted Cruz, a Republican from Texas and 2016 presidential candidate, not pictured, during a campaign event in Milwaukee, Wisconsin, U.S.
A man takes a photograph of the stage before a campaign event featuring Republican presidential candidate Donald Trump at St. Norbert College in De Pere, Wisconsin, USA
Dan LaMoore wheels a clock away from the test area as it is prepared to be shipped to a Tennessee school at the Electric Time Company in Medfield, Massachusetts.
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Democratic presidential candidate Hillary Clinton speaks to an capacity audience during a campaign event in Vernon Hills, Illinois.
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Tim Ferris shades himself from the sun while waiting in line to attend a campaign rally with Democratic presidential candidate, Sen. Bernie Sanders, in Kissimmee, Florida, USA
Republican presidential candidate, Senator Marco Rubio, poses for photographs during a campaign rally in Hialeah, Florida
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President Barack Obama meets with members of his economic team in the Roosevelt Room of the White House in Washington. Obama spoke about U.S. employers adding 242,000 workers in February, driving another solid month for the resilient American job market
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Oklahoma City Thunder’s Kevin Durant drives to the basket between Golden State Warriors’ Harrison Barnes, left, and Shaun Livingston during the second half of an NBA basketball game in Oakland, Calif.