May 27 - June 2, 2012 (91 images)

Oil workers monitor a oil pumping and storage site at the Niobrara oil shale formation in Weld County, North eastern Colorado on May 30, 2012. Gas and oil companies are using large amounts of water to obtain shale oil and gas in a process called hydraulic fracturing or fracking. UPI/Gary C. Caskey

Union Jack flags decorate Covent Garden Market ahead of Queen Elizabeth II's Diamond Jubilee Celebrations in London on May 30, 2012. Diamond Jubilee celebrations will take place June 2-5. UPI/Rune Hellestad

Roger Federer of Switzerland acknowledges the crowd after winning his French Open mens second round match against Romanian Adrian Ungur at Roland Garros in Paris on May 30, 2012. Federer defeated Ungur 6-3, 6-2, 6-7 (6), 6-3 to advance to the next round. UPI/David Silpa

Lori Anne Madison, 6, of Woodbridge, Virginia, looks up as she ponders a question at a press conference at the Scripps National Spelling Bee, May 31, 2012, in National Harbor, Maryland. Madison, the youngest known qualifier in the history of the contest, ended her competition when she misspelled the word, * ingluvies *, the craw in birds, but she said she expected to return next year. UPI/Mike Theiler