Sizzling summer

Friends Grace Greenwood and Alex Place, both of rlington, Virginia, leap into a water sprinkler for a "high ten" during heat wave at the Washington Monument in Washington July 18, 2013. Greenwood was celebrating her birthday with a visit into the city. The Northeast is experiencing a heat wave with temperatures around 100 degrees Fahrenheit.

Maribel Castro sews in her un-air conditioned shop, on July 17, in Philadelphia.

Mylo Gomez, 6, leaps over a fountain while keeping cool during a heat wave, on July 18, in Union City, N.J.

Salesman Hyper Rosado cools off in between customers during the afternoon heat at Appliances R Us, on July 18, in Philadelphia. An excessive heat warning is again in effect for the Philadelphia region with highs expected to head up to the high-90s.

Salesman Lu Pichardo carries a customer's air conditioner at Appliances R Us, on July 18, in Philadelphia.

Children run through a sprinkler system installed inside a playground to cool off during a hot summer day in New York, on July 17.

Roofer Juan Belis works in the midday heat atop a building, on July 16, in Philadelphia.

A man sunbathes in Hudson River Park in New York during a heat wave on July 16.

A New York police officer wipes away sweat as he works during the baseball All-Star Game parade on July 16 along 42nd Street in New York.

Youngsters frolic on a raft in Curtis Pond in Calais, Vt., on July 16.

A man relaxes on a bench near Times Square on July 16 in New York City.

A couple laughs as they watch the sun set behind the skyline of New York on July 16.

Double amputee Chris Moon of the U.K. runs in the AdventurCORPS Badwater 135 ultra-marathon race on July 15 in Death Valley National Park in California. Billed as the toughest footrace in the world, the 36th annual Badwater 135 starts at Badwater Basin in Death Valley, 280 feet below sea level, where athletes begin a 135-mile non-stop run over three mountain ranges in extreme mid-summer desert heat to finish at 8,350 feet above sea level near Mount Whitney for a total cumulative vertical ascent of 13,000 feet.

Isaiah Conn, 11, shuts his eyes as he body surfs in the waves at Kandle Park pool in Tacoma, Wash., on July 15.

A man pours water on his head to cool off during hot weather on July 15, 2013, in midtown Manhattan.

Mary, 8, plays in the fountain in New York City's Washington Square Park on July 15.

Elizabeth Mills tries to keep cool while relaxing in New York City's Bryant Park on July 15.

Young people throw colored powders at each other during the 'Festival of Colors' in St.Petersburg, Russia, on July 13.

A woman reads a book in Richmond Park in southwest London on July 13.

Cooley, a Golden Retriever, cools off in a swimming pool with Wally, a Wheaten Terrier, at the Millbrook Exchange Park dog park on July 5, in Raleigh, N.C.

A boy plays with a soap bubble in one of Kiev parks on a hot day in the Ukrainian capital on July 5.

A surfer takes advantage of a wave at Fistral Beach on July 5, in Newquay, England.

Residents and visitors of Alexander's Lake sit out on their docks and in small boats as they watch neighborhood fireworks as they celebrate Independence Day on July 4, in Dayville, Conn.

Tourists cool off in a pool of the Guadalevin river on a hot summer day below the Puente Nuevo in Ronda, near Malaga, southern Spain on July 4.

Ten-year-old Easton Martin, of Mesa, Ariz., stops to cool off in a misting fan while walking along The Strip with his family on June 28 in Las Vegas.

Revellers gather to celebrate the eve of Summer Solstice within the circle of standing stones at Stonehenge, near Salisbury, Britain, on June 20. Thousands annually meet at the 5,000 year old stone circle at Stonehenge to see in the sunrise of the Summer Solstice which marks the longest day of the year in the Northern Hemisphere.

Max Hofer, Noah Frutiger, Dominik Boegli and David Habegger jump from a bridge into the river Aare in Thun, Switzerland, on June 19. As temperatures rose well over 86 degrees Fahrenheit, people looked for ways to cool off.

A dog, named Sare drinks water from a fountain in Belgrade, Serbia, on June 19. Hot weather has set in with temperatures rising up to 93 Fahrenheit in Belgrade.

People enjoy hot and sunny weather at a public swimming pool on June 19, in Prague, Czech Republic. As a heat wave hits the central Europe region, the Czech capital of Prague enjoyed a record temperature of 96 degrees Fahrenheit.

An elephant sprays water toward visitors at the jungle palace area of the zoo in Hanover, Germany, on June 19.

A girl runs through water fountains at a public square in Vienna on June 18.

A family enjoys the summer weather at Lake Constance in Unteruhldingen, Germany, on June 18.

A man enjoys the warm sun next to a pile of snow on the Pilatus mountain, Switzerland, on June 18.

A boy jumps into the water of a public swimming pool in Hanover, central Germany, on June 17.

David Bittner wakeboards at the water ski facility in Langenfeld, Germany, on June 17.

A man sunbathes between the shadows of two buildings on Boa Viagem Beach in Recife, Brazil, on June 17.

Backdropped by the French alps, kids jump into Geneva Lake and enjoy the sun and warm weather, in Lutry Beach near Lausanne, Southwestern Switzerland, on June 16.

Palestinians enjoy a summer day at the beach in the west of Gaza City, Gaza Strip, on June 14.

A double rainbow is seen during a heavy rainfall over Djurgarden and Nacka in Stockholm, Sweden, on June 14.

A herdsman directs a large herd of cattle, sheep and goat as they migrate to the summer pasturing areas at a mountainous region in Altay Prefecture, Xinjiang Uighur Autonomous Region, on June 13.

Fifth-grader Nick Pollack runs through a tunnel of "high fives" from students lining the halls, on his way out of school, on June 11, in State College, Pa. Tuesday is the last day of school in the State College Area School District. Students lined the halls to send off the graduating fifth-graders at the end of the school term.

People make last minute preparations before the start of the feature presentation movie, To Wong Foo, on an inflatable screen at the Electric Dusk Drive-In on June 9, in Los Angeles, Calif. The Electric Dusk Drive-in began as the Devil's Night Drive-In on the rooftop of a nearby parking structure. It now takes place at the "urban ruins" in the downtown Fashion District, where now-vanished manufacturing businesses have become the film sites of numerous movies. Like the original location, the current location is facing development but not imminently. Eventually, the "urban ruins" will go under the shovel for a massive development project of hotels, offices, apartments and a college campus costing as much as $1 billion as gentrification continues to spread through downtown Los Angeles where nights have been mostly populated by thousands of homeless people.

Competitors at the Gladiator Rock N' Run maneuver the "beast," a wall they must scale to make it to the finish of the race in Irvine, Calif., on June 8.

United States Naval Academy graduates throw their hats at the conclusion of their commencement and commission ceremony at the Navy-Marine Corps Memorial Stadium in Annapolis, Md., on May 24.

Campers talk and share food on an undisclosed rooftop on June 15, in the Brooklyn Borough of New York City. The project, arranged by artist Thomas Stevenson, is called "Bivouac New York," and sets up campsites for guests at various rooftops throughout the summer. Campers are encouraged to turn off their electronic gadgets while focusing on exploring outdoor environments within a city context and engaging in conversations with other campers. The experience is free, and campers are encouraged to bring food and drink to share with others.

A boy jumps into a water canal on a hot day in the eastern city of Lahore on June 9. Temperatures reached 109 degrees Fahrenheit in Lahore as weather remained hot and dry in other parts of the country, according to the Pakistan Meteorological Department.

Travellers wash their horse in the river Eden at Appleby in Westmorland, northern England June 9, 2013. The horses are washed as part of the annual horse fair which has taken place since the 1600's.

A flock of geese walks next to Julia and Tamara who were enjoying the sun on the banks of the Neckar River in Heidelberg, Germany on June 7.

Israelis and tourists participate in the annual Gay Pride parade on the beach of Tel Aviv, Israel, on June 7. Colorful floats with scantily dressed revelers drove through the streets as tens of thousands cheered, waved flags and gyrated to loud music.

Seagulls stand on the beach at Cape Henlopen, Del., on June 5.

People try to cool off in a fountain near a monument to former soviet leader Vladimir Lenin in St. Petersburg, Russia, on June 3.

Canoeists make a practice run on the Yamuna river in Allahabad, India, on June 3.

Eight-year-old Mike B., right, of Brooklyn, cools off at an open fire hydrant in Brooklyn, N.Y., on May 31. Temperatures in the New York area where forecasted to reach up to 93 Fahrenheit.

A man takes a drink of water in Bryant Park during lunchtime on May 30, in New York City.

The sun sets along 42nd Street in Manhattan during an annual phenomenon known as "Manhattanhenge," when the sun aligns perfectly with the city's transit grid, on May 29, in New York.

An Indian boy cools himself off with water distributed by the municipality in a local slum on a hot summer day in New Delhi, India, on May 28. Temperatures soared to 109 Fahrenheit in the Indian capital Tuesday.

Beachgoers flock to Coney Island on Memorial Day on Monday, May 27, in New York. Despite cool weather and cold water, thousands of visitors took to the sand and the boardwalk.

Makayla Fulper plays beach volleyball with her friends on the first weekend Jersey Shore beaches re-opened to the public on May 27, in Seaside Heights, N.J. The region continues to recover and rebuild after Hurricane Sandy devastated parts of the coastline.

Allison Priddle, 27, left, and Jessica Chapa, 25, right, sunbathe in Richmond, Va., on May 27.

A girl poses for a picture on the first weekend Jersey Shore beaches re-opened to the public on May 27, in Seaside Heights, N.J.

Dozens of boaters enjoy their Memorial Day holiday near a sandbar near Baker's Haulover Inlet in Biscayne Bay, on May 27, in Miami Beach, Fla.

Contestants in the Schooner Wharf Minimal Regatta paddle their entries on May 26, in Key West, Fla. Rules of the offbeat Memorial Day Weekend event required each team to build a boat out of a single sheet of 4-by-8-foot plywood, two 8-foot-long two-by-fours, a roll of duct tape and a pound of fasteners.

Regan Turpin, 10, leads a group of boys in crossing the lily pad feature at the Lawrence Outdoor Aquatic Center on Saturday, May 25, the first day for the summer opening of the Outdoor Aquatic Center in Lawrence, Kan.

A crowd of people sit on the beach Saturday, May 25, on Okaloosa Island at The Boardwalk in Fort Walton Beach, Fla.

Fishermen pack the end of the pier at the Russell-Fields Pier in Panama City Beach, Fla. on Saturday, May 25.

Veronica Thomas watches as her grandfather John Thomas has lunch at the clam bar at Nathan's Famous in the Coney Island section of Brooklyn, N.Y., on Thursday, May 23. The hot dog emporium, which opened in 1916, was heavily damaged by flooding during Super Storm Sandy in October and reopened Thursday in time for Memorial Day weekend.

Music fans enjoy the second day of Rocklahoma, a three-day music festival in Pryor, Okla.

A couple embraces on the beach at Coney Island in Brooklyn, New York, May 26.