Elephants enjoy various kinds of fruits and vegetables during an all-you-can-eat elephant buffet held to mark the National Elephant Day at the ancient historical city of Ayutthaya, Thailand, 13 March 2014. The annual National Thai Elephant Day is held on 13 March to celebrate and drawing public attention for more concerted effort to save the species and protect its habitat. Thailand sees a severe decline with less than 3,000 wild elephants left in the kingdom. (Photo by Rungroj Yongrit/EPA)

Onlookers gather around a struggling beached whale in the Yoff neighborhood of Dakar, Senegal Wednesday, May 21, 2008. Residents worked Wednesday morning to save some of the more than 80 whales that were stranded on the beach Tuesday night. This whale was successfully towed out to sea by a fishing boat, though at least 20 others lay dead on the beach by midday Wednesday. (Photo by Rebecca Blackwell/AP Photo)

Typhoon Haiyan survivor Mariena Delacueva stands amongst the ruins of her families home on November 6, 2014 in San Antonio, Samar, Philippines. Mariena's looks after the property after her parents moved to Manila to find work so they can save enough money to rebuild the house. Residents of Leyte and surrounds are preparing for the 1-year anniversary since Super Typhoon Yolanda struck the coast on November 8, 2013, leaving more than 6000 dead and many more homeless. (Photo by Chris McGrath/Getty Images)

Gold bars from the vault of a bank and Swiss one franc coins are seen in this illustration picture taken in Zurich November 20, 2014. The “Save our Swiss gold” proposal, spearheaded by the right-wing Swiss People's Party (SVP), aims to ban the central bank from offloading its reserves and oblige it to hold at least 20 percent of its assets in gold. The referendum is scheduled for November 30. The SVP argues it would secure a stable Swiss franc. (Photo by Arnd Wiegmann/Reuters)

Revellers chase a bull into the sea during the “Bous a la Mar” festival on July 14, 2011 in Denia, Spain. The Spanish “Bous a la Mar” or “Bulls to the Sea” festival is held in honour of the Santisima Sangre and commemorate a monk named Pedro Esteve, who, as the legend has it, saved the coastal town of Denia from a plague in 1633. The bulls chased into the sea are later brought back to land by small boats. (Photo by Jasper Juinen/Getty Images)

Google has built its first self-driving car prototypes and hopes to test hundreds more models this summer. If all goes well, the company is planning a pilot program in California over the next few years.

A flight attendant wearing a Brazil soccer team jersey demonstrates the emergency mask on an airplane travelling from Kunming to Hangzhou June 23, 2014. A Chinese airline company renovated the cabin of one of its flights then dressed the flight attendants with soccer jerseys as a way to celebrate the 2014 Brazil World Cup and hoping to attract more customers, local media reported. (Photo by Wong Campion/Reuters)

A christmas teddy bear is wheeled along on a trolley at the Steiff stuffed toy factory on November 23, 2012 in Giengen an der Brenz, Germany. Founded by seamstress Margarethe Steiff in 1880, Steiff has been making stuffed teddy bears since the early 20th century ever since her nephew Richard Steiff exhibited the first commercially produced teddy bear in Europe in 1903. Teddy bears are among the most popular children's toys and the company is hoping for a strong Christmas season. (Photo by Thomas Niedermueller)