Women cry as they look for reusable household materials after fire broke at slums in Kadivali area of Mumbai, India, Monday, December 7, 2015. Hundreds of homes were reportedly destroyed as fire tenders labored to reach the source in the heavily congested area. (Photo by Rajanish Kakade/AP Photo)

Passengers from a passing train watch as rescue workers search a train which crashed in Karachi, Pakistan, November 3, 2016. At least 17 people have been killed and dozens more injured after two trains carrying hundreds of passengers collided in Pakistan's southern port city of Karachi, officials said. (Photo by Akhtar Soomro/Reuters)

Children in Hiroshima, Japan, wearing masks to combat the odour of death after the city was destroyed by the first atom bomb. (Photo by Keystone/Getty Images). 1945

A Nepalese woman sits inside her house in an alley of Bhaktapur, 12 kilometers (7.5 miles) east of Kathmandu, Monday, May 25, 2015, one month after the deadly 7.8 magnitude earthquake hit Nepal. Two powerful earthquakes devastated Nepal on April 25 and May 12, killing nearly 8,700 people and injuring 16,800 others. The quakes and aftershocks also triggered many landslides in the Himalayan nation, which boasts eight of the world's highest mountains gets about half a million tourists every year, with many coming to trek the Himalayan nation's scenic mountain trails. (Photo by Niranjan Shrestha/AP Photo)

Residents make their way along a fence as they try to cross a flooded street after heavy rainfall hit Wuhan, Hubei province, China, July 23, 2015. Severe downpours hit the city on Thursday, flooding streets and shutting down public transportations, local media reported. (Photo by Reuters/China Daily)

A woman wearing a face mask and a child sit between rail tracks, during the imposition of large-scale social restrictions by the government to prevent the spread of the coronavirus disease (COVID-19) in Jakarta, Indonesia, April 12, 2020. (Photo by Willy Kurniawan/Reuters)

Clarice Hui and her Corgi dog Padfoot enjoying the hot weather in London Fields park, east London on May 19, 2020, after the introduction of measures to bring the country out of lockdown. (Photo by Yui Mok/PA Images via Getty Images)

Iranians wearing face masks against the Covid-19 coronavirus attends Laylat al-Qadr prayers, one of the holiest nights during the Muslim fasting month of Ramadan, outside a mosque in the Tehran, on May 13, 2020. (Photo by Atta Kenare/AFP Photo)