A woman buys bread at a bakery in Cairo, January 8, 2015. The successful roll-out so far of a new “smart card” system to distribute subsidised bread has been a major achievement for Egypt's government, saving money while earning praise from families who no longer have to wake early to fight for loaves. (Photo by Mohamed Abd El Ghany/Reuters)

People carry lychee for sale on a motorbike on a street in Luc Ngan, Bac Giang province, Vietnam, 22 June 2016. Lychee output in Bac Giang province is expected to reach 130,000 tonnes this year. China is still Vietnam's main lychee export market so far, buying around 60 percent of the annual crop, according to official reports. (Photo by Luong Thai Linh/EPA)

In this Tuesday, May 3, 2016 photo, Madeley Vasquez, 16, breast feeds her one-year-old son Joangel as she waits in line outside a supermarket to buy food in Caracas, Venezuela. Vasquez once ran down the block to avoid getting caught up in a knife fight that broke out when a woman was accused of cutting the line. (Photo by Ariana Cubillos/AP Photo)

A horse is ridden out of the River Eden after being washed on the first day of the Appleby Horse Fair on June 7, 2018 in Appleby, England. The fair is an annual gathering for Gypsy, Romany and travelling communities. The event has existed under the protection of a charter granted by James II since 1685 and it remains one of the key meeting points for these communities. Around 10,000 travellers are expected to attend the event who traditionally come to buy and sell horses and it offers an opportunity for the traveller community to come together to celebrate their heritage and culture. (Photo by Ian Forsyth/Getty Images)

A man holds the new iPhone 4S after being one of the first customers in the Apple store in Covent Garden on October 14, 2011 in London, England. The widely anticipated new mobile phone from Apple has seen customers queue in cities around the world for hours to be amongst the first to buy the device. (Photo by Oli Scarff/Getty Images)

Masaaki Nagumo controls the Land Walker robot at Sakakibara Kikai Co., Ltd Headquarters on May 12, 2005 in Maebashi, Japan. The two legged robot stands at 3.4 metres high and weighs 1000kg. The Land Walker is available to buy for 36,000,000 yen (approximately US $340,000). Masaaki Nagumo developed Land Walker on the basis of the dream he has had in his childhood that enables a person to go on. (Photo by Koichi Kamoshida/Getty Images)