© The Financial Times Ltd 2015 FT and 'Financial Times' are trademarks of The Financial Times Ltd.
A wall of flames lurches over a ridge as a resident of Morgan Valley Road near Lower Lake, California, prepares to evacuate because of the 3,000 acre Rocky Fire that has taken hold in Lake County.
A general view shows oil pumping jacks and drilling pads at the Kern River Oil Field where the principle operator is the Chevron Corporation in Bakersfield, California. The field is the third largest in California, fifth largest in the United States and relies mainly on the steam injection method to extract the crude oil.
A long-distance swimmer dives into the Atlantic Ocean at dawn on Friday, in Falmouth, Maine. The woman is part of a group that regularly starts their day with a 2-mile swim
Fisherman cast their lines off a jetty in the early morning hours as dark clouds loom over the Atlantic Ocean on Tuesday, in Bal Harbour, Florida
Lightning strikes during a thunderstorm in Las Vegas, Nevada. The monsoon storm dropped heavy rain and hail in parts of the valley causing street flooding and power outages
The moon rises as people sit on rides at the State Fair Meadowlands, in East Rutherford, N.J.
Mass lightning bolts light up night skies by the Daggett airport from monsoon storms passing over the high deserts early Wednesday, north of Barstow, California
A Los Angeles City Fire helicopter drops water on a hillside fire in Santa Clarita, Calif. About 1,000 people have been evacuated from homes as a 100-acre wildfire burns through brushy canyonlands north of Los Angeles.
A combine makes a turn while harvesting in a wheat field near Mt. Hope, Kansas, USA>
A zombie promoting “The Walking Dead” game walks amongst gamers at the opening day of the Electronic Entertainment Expo, known as E3 at the Convention Center in Los Angeles, California
Graduates toss their caps in the air at the conclusion of the commencement ceremony for the U.S. Naval Academy Class of 2015 in Annapolis, Maryland on Friday
Workers clean up an oil slick along the coast of Refugio State Beach in Goleta, California, United States on Wednesday. A pipeline ruptured along the scenic California coastline on Tuesday, spilling some 21,000 gallons (79,000 liters) of oil into the ocean and on beaches before it could be secured
Investigators and first responders work near the wreckage of Amtrak Northeast Regional Train 188, from Washington to New York, that derailed yesterday on Wednesday in north Philadelphia, Pennsylvania
US President Barack Obama and Japanese Prime Minister Shinzo Abe attend official welcoming ceremonies on the South Lawn of the White House in Washington, DC on Tuesday
The Empire State Building is lit in red and purple in New York as part of efforts to bring attention to the 219 missing Nigerian schoolgirls kidnapped by Boko Haram a year ago.
A worker lowers himself from a scaffold in front of a Hillary Clinton sign near her campaign headquarters in the Brooklyn borough of New York on Tuesday
Fans listen to David Guetta at the Coachella Valley Music and Arts Festival in Indio, California.
A woman does acrobatics as she waits for a band to start playing at the Coachella Valley Music and Arts Festival in Indio, California.