Robots compete in a football match during the RoboCup 2015 in Hefei, east China's Anhui province on Wednesday

AFP

Robots compete in a football match during the RoboCup 2015 in Hefei in eastern China’s Anhui province on Wednesday

Ukrainian soldiers demonstrate their skills, prior to being sent the country's east to fight against pro-Russian separatists, in a military base in the village of Novi Petrivtsi near Kiev Wednesday, July 22, 2015.

Efrem Lukasky/AP

Ukrainian soldiers demonstrate their skills, prior to being sent the country’s east to fight against pro-Russian separatists, in a military base in the village of Novi Petrivtsi near Kiev on Wednesday

Indian police detain a Youth Congress activist after they storm a barricade during a protest against the Bhartiya Janta Party (BJP) led Government near parliament house in New Delhi, India, 22 July 2015. Members of Indian Youth Congress protested against the Ministers of BJP led Government for their alleged involvement in various scams including the recruitment racket in Vyapam or the Madhya Pradesh Professional Examination Board and helping former cricket official, Lalit Modi

Harish Tyagi/EPA

Indian police detain a Youth Congress activist after they storm a barricade during a protest against the Bhartiya Janta Party (BJP) led Government near parliament house in New Delhi, India on Wednesday. Members of Indian Youth Congress protested against the Ministers of BJP led Government for their alleged involvement in various scams including the recruitment racket in Vyapam or the Madhya Pradesh Professional Examination Board and helping former cricket official, Lalit Modi

Fisherman cast their lines off a jetty in the early morning hours as dark clouds loom over the Atlantic Ocean, Tuesday, July 21, 2015, in Bal Harbour, Fla.

Wilfredo Lee/AP

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

A seal cools off at Belgrade Zoo during a heatwave on Tuesday. In Serbia where the meteoalarm has been raised to 'red', extremely hot weather with temperatures up to 39 degrees Celsius is expected to continue over the next several days

Andrej Isakovic/AFP

A seal cools off at Belgrade Zoo during a heatwave on Tuesday. In Serbia where the meteoalarm has been raised to ‘red’, extremely hot weather with temperatures up to 39 degrees Celsius

Mourners react over coffins in Gaziantep on July 21, 2015, during a funeral ceremony for victims following a suicide bomb attack the day before which killed at least 31 in the southern Turkish town of Suruc. A suspected Islamic State suicide bomber killed at least 31 people in an attack on a Turkish cultural centre in the southern town of Suruc, where activists had gathered to prepare for an aid mission in the nearby Syrian town of Kobane. It was one of the deadliest attacks in Turkey in recent years and the first time the government has directly accused the IS group of carrying out an act of terror on Turkish soil

Bulent Kilic/AFP

Mourners react over coffins in Gaziantep on Tuesday, during a funeral ceremony for victims following a suicide bomb attack the day before which killed at least 31 in the southern Turkish town of Suruc

Election observers sit in an empty polling station for the presidential elections in Bujumbura, Burundi, Tuesday, July 21, 2015. A low turnout was experienced in several polling stations in the Burundi s capital at the start of voting in the country s presidential election following a night of explosions and gunfire in at least two opposition strongholds that oppose President Pierre Nkurunziza s candidacy for a third term in office

Jerome Delay/AP

Election observers sit in an empty polling station for the presidential elections in Bujumbura, Burundi, on Tuesday

The glowing band of the so-called 'Milky Way' seen in the summer night sky over the vicinity of Salgotarjan, 109 kilometers northeast of Budapest, Hungary

Peter Komka/EPA

The glowing band of the so-called ‘Milky Way’ seen in the summer night sky over the vicinity of Salgotarjan, 109km northeast of Budapest, Hungary

An Indian woman walks holding an umbrella during monsoon rains in Jammu, India, Tuesday, July 21, 2015. India receives the annual monsoon rains from June to September

Channi Anand/AP

An Indian woman walks holding an umbrella during monsoon rains in Jammu, India, on Tuesday. India receives the annual monsoon rains from June to September

A Queen's Swan Upper holds a swan during the annual count of the Queen's swans on the river Thames in Middlesex in Staines on Thames, England, Monday

Frank Augstein)/AP

A Queen’s Swan Upper holds a swan during the annual count of the Queen’s swans on the river Thames in Middlesex in Staines on Thames, England, Monday

Migrants wait on the Greek side of the border to enter in Macedonia near city of Gevgelija, The Former Yugoslav Republic of Macedonia on Monday. Thousands of migrants who crossed Greece are on their way through Macedonia towards Serbia in order to access other European countries. Hungary in mid-July started to put up a fence on its border with Serbia, which makes the situation with the migrants in the transit countries even more complicated. The European countries on 20 July will discuss the quota of how many migrants each country should accept.

Georgi Licovski/EPA

Migrants wait on the Greek side of the border to enter in Macedonia near city of Gevgelija, The Former Yugoslav Republic of Macedonia on Monday. Thousands of migrants who crossed Greece are on their way through Macedonia towards Serbia in order to access other European countries

A musician plays the accordion in the neighborhood of La Esperanza, on the outskirts of Monterrey

Daniel Becerril/Reuters

A musician plays the accordion in the neighborhood of La Esperanza, on the outskirts of Monterrey

Syrian refugee girl, Zubaida Faisal, 10, skips a rope while she and other children play near their tents at an informal tented settlement near the Syrian border on the outskirts of Mafraq, Jordan

Muhammed Muheisen/AP

Syrian refugee girl, Zubaida Faisal, 10, skips a rope while she and other children play near their tents at an informal tented settlement near the Syrian border on the outskirts of Mafraq, Jordan

Members of the self-proclaimed Donetsk People's Republic forces sit on an armored vehicle on the roadside near the site of the Malaysia Airlines flight MH17 plane crash outside the village of Hrabove in Donetsk region, Ukraine, July 17, 2015. The rebel-held east Ukrainian village where a Malaysian airliner was shot down honored the 298 victims at a simple ceremony on Friday as calls grew for an international tribunal to prosecute those who brought it down. After a church service in the village of Hrabove, residents joined a procession across an open field to a gravestone placed near the charred area where twisted metal and body parts came crashing down on July 17 last year.

Kazbek Basaev/Reuters

Members of the self-proclaimed Donetsk People’s Republic forces sit on an armored vehicle on the roadside near the site of the Malaysia Airlines flight MH17 plane crash outside the village of Hrabove in Donetsk region, Ukraine on Friday

An helicopter of firefighters fly over smokes billowing over Athens, on July 17, 2015 as firemen were battling a brush fire in northeastern Athens and another wildfire in the southern Pelopponese peninsula that prompted the evacuation of five villages. More than 120 firefighters had been dispatched to the area, supported by 50 fire engines, four aircraft and two helicopters

Andreas Solaro/AFP

An helicopter of firefighters fly over smokes billowing over Athens, on Friday as firemen were battling a brush fire in northeastern Athens and another wildfire in the southern Pelopponese peninsula that prompted the evacuation of five villages

Syrian refugee Heba Ahmad, 7, pauses while playing on a swing with other children on the first day of the Eid al-Fitr holiday that marks the end of the holy fasting month of Ramadan at Zaatari refugee camp, in Mafraq, Jordan, Friday, July 17, 2015.

Muhammed Muheisen/AP

Syrian refugee Heba Ahmad, pauses while playing on a swing with other children on the first day of the Eid al-Fitr holiday that marks the end of the holy fasting month of Ramadan at Zaatari refugee camp, in Mafraq, Jordan on Friday

A worker conducts surveying at the construction site of Japan's new National Stadium in Tokyo on Friday. Japan's new National Stadium has been ditched as the main venue for the 2019 Rugby World Cup because its proposed design will be scrapped to cut costs and it won't be ready in time, Prime Minister Shinzo Abe said on Friday

Thomas Peter/Reuters

A worker conducts surveying at the construction site of Japan’s new National Stadium in Tokyo. Japan’s new National Stadium has been ditched as the main venue for the 2019 Rugby World Cup because its proposed design will be scrapped to cut costs and it won’t be ready in time, Prime Minister Shinzo Abe said on Friday

A course worker shelters under an umbrella in the stands during day two of The Open Championship 2015 at St Andrews, Fife

Danny Lawson/PA

A course worker shelters under an umbrella in the stands as play is suspended during day two of The Open Championship 2015 at St Andrews, Fife.

A Kashmiri villager cries for his missing relative after a cloud burst at Kullan village in Ganderbal district, on Friday. At least four people were killed in a series of cloud bursts that were reported from several parts of Kashmir during heavy rainfall, local media reported on Friday

Danish Ismail/Reuters

A Kashmiri villager cries for his missing relative after a cloud burst at Kullan village in Ganderbal district, on Friday. At least four people were killed in a series of cloud bursts that were reported from several parts of Kashmir during heavy rainfall

A protester is seen wrapped in a Honduran flag during clashes with the police in the surroundings of the Presidential Palace in Tegucigalpa, on July 16, 2015. At least 22 people on hunger strike, including Human Rights activist Wilfredo Mendez, demand the installation of the International Commission against Impunity in Honduras (CICIH).

Orlando Sierra/AFP

A protester is seen wrapped in a Honduran flag during clashes with the police in the surroundings of the Presidential Palace in Tegucigalpa, on Thursday. At least 22 people on hunger strike, including Human Rights activist Wilfredo Mendez, demand the installation of the International Commission against Impunity in Honduras (CICIH)