Erik Tollefsen, head of the weapon contamination unit of the International Committee of the Red Cross (ICRC) talks during an interview with Reuters in Geneva, Switzerland, June 8, 2023. REUTERS/Denis Balibouse 

Erik Tollefsen, head of the weapon contamination unit of the International Committee of the Red Cross (ICRC) poses after an interview with Reuters in Geneva, Switzerland, June 8, 2023. REUTERS/Denis Balibouse 

The entrance to Rooiwal Sewage Works, which is being investigated as a possible source of water contamination during a cholera outbreak that has caused the death of individuals, in Hammanskraal, South Africa, May 24, 2023. REUTERS/Ihsaan Haffejee 

The Temba Water Treatment Works which is being investigated as a possible source of water contamination during a cholera outbreak that has caused the death of individuals in Hammanskraal, South Africa, May 24, 2023. REUTERS/Ihsaan Haffejee 

Atsushi Kaifu, director-general of the Japanese foreign ministry's disarmament talks with head of the South Korean foreign ministry bureau for climate change, energy, environment and scientific affairs, Yun Hyun-soo during a director general level meeting to discuss details of Seoul's inspection of Japan's plan to discharge contaminated water from the crippled Fukushima nuclear power plant, at the South Korea's foreign ministry on May 12, 2023 in Seoul, South Korea. Kim Min-Hee-Kyodo/Pool via REUTERS 

Atsushi Kaifu, director-general of the Japanese foreign ministry's disarmament arrives for a meeting with South Korean foreign ministry bureau for climate change, energy, environment and scientific affairs, Yun Hyun-soo, to discuss details of Seoul's inspection of Japan's plan to discharge contaminated water from the crippled Fukushima nuclear power plant, at the South Korea's foreign ministry on May 12, 2023 in Seoul, South Korea. Kim Min-Hee-Kyodo/Pool via REUTERS 

Head of the South Korean foreign ministry bureau for climate change, energy, environment and scientific affairs, Yun Hyun-soo talks with Atsushi Kaifu, director-general of the Japanese foreign ministry's disarmament during a director general level meeting to discuss details of Seoul's inspection of Japan's plan to discharge contaminated water from the crippled Fukushima nuclear power plant, at the South Korea's foreign ministry on May 12, 2023 in Seoul, South Korea. Kim Min-Hee-Kyodo/Pool via REUTERS 

Head of the South Korean foreign ministry bureau for climate change, energy, environment and scientific affairs, Yun Hyun-soo talks with Atsushi Kaifu, director-general of the Japanese foreign ministry's disarmament during a director general level meeting to discuss details of Seoul's inspection of Japan's plan to discharge contaminated water from the crippled Fukushima nuclear power plant, at the South Korea's foreign ministry on May 12, 2023 in Seoul, South Korea. Kim Min-Hee-Kyodo/Pool via REUTERS 

Bags of heroin and cocaine, which have been tested for contaminants, are seen at The Drugs Store, which operates out of a trailer, where Jerry Martin, a drug user advocate, offers tested drugs such as cocaine, heroin, meth and MDMA for purchase, in the Downtown Eastside of Vancouver, British Columbia, Canada, May 3, 2023. REUTERS/Jennifer Gauthier 

A bag of cocaine, which had been tested for contaminants, is seen at The Drugs Store, which operates out of a trailer, where Jerry Martin, a drug user advocate, offers tested drugs such as cocaine, heroin, meth and MDMA for purchase, in the Downtown Eastside of Vancouver, British Columbia, Canada, May 3, 2023. REUTERS/Jennifer Gauthier 

Children carry water bottles in Suluq area which experiences shortages in potable water amid contaminations of underground wells, near Benghazi, Libya, March 12, 2023. REUTERS/Esam Omran Al-Fetori 

Children carry water bottles in Suluq area which experiences shortages in potable water amid contaminations of underground wells, near Benghazi, Libya, March 12, 2023. REUTERS/Esam Omran Al-Fetori 

A dry branch covered with arsenic ore, is seen in a landfill contaminated with arsenic, in the village of Lojane, North Macedonia March 9, 2023.REUTERS/Ognen Teofilovski 

An aerial view of students playing, near a landfill contaminated with arsenic, in the village of Lojane, North Macedonia March 9, 2023. REUTERS/Ognen Teofilovski 

An aerial view of a landfill contaminated with arsenic, in the village of Lojane, North Macedonia March 9, 2023. REUTERS/Ognen Teofilovski 

A view of a landfill contaminated with 5,000 tonnes of 50% concentration of arsenic, near a railway line, where international trains travel from Greece through North Macedonia, to other parts of Europe, near the border village of Tabanovce, North Macedonia March 9, 2023. REUTERS/Ognen Teofilovski 

An aerial view of a landfill contaminated with 5,000 tonnes of 50% concentration of arsenic, near a railway line, where international trains travel from Greece through North Macedonia, to other parts of Europe, near the border village of Tabanovce, North Macedonia March 9, 2023. REUTERS/Ognen Teofilovski 

Footsteps are seen in a landfill contaminated with arsenic, in the village of Lojane, North Macedonia March 9, 2023. REUTERS/Ognen Teofilovski 

An aerial view of a landfill contaminated with arsenic, in the village of Lojane, North Macedonia March 9, 2023. REUTERS/Ognen Teofilovski 

An aerial view of a landfill contaminated with arsenic, in the village of Lojane, North Macedonia March 9, 2023. REUTERS/Ognen Teofilovski TPX IMAGES OF THE DAY 

Dry water lines are seen in a landfill contaminated with arsenic, in the village of Lojane, North Macedonia March 9, 2023. REUTERS/Ognen Teofilovski 

A general view shows water next to the road filled with polluted sewage in Suluq area which experiences shortages in potable water amid contaminations of underground wells, near Benghazi, Libya, March 9, 2023. REUTERS/Esam Omran Al-Fetori 

A general view shows water next to the road filled with polluted sewage in Suluq area which experiences shortages in potable water amid contaminations of underground wells, near Benghazi, Libya, March 9, 2023. REUTERS/Esam Omran Al-Fetori 

A view shows dilapidated water pumps inside a water plant in Suluq area which experiences shortages in potable water amid contaminations of underground wells, near Benghazi, Libya, March 9, 2023. REUTERS/Esam Omran Al-Fetori 

A view shows dilapidated water pumps inside a water plant in Suluq area which experiences shortages in potable water amid contaminations of underground wells, near Benghazi, Libya, March 9, 2023. REUTERS/Esam Omran Al-Fetori 

A man fills the tank on his truck with water to sell it to the residents of Suluq area which experiences shortages in potable water amid contaminations of underground wells, near Benghazi, Libya, March 9, 2023. REUTERS/Esam Omran Al-Fetori 

A view shows a broken water pipe inside a water plant in Suluq area which experiences shortages in potable water amid contaminations of underground wells, near Benghazi, Libya, March 9, 2023. REUTERS/Esam Omran Al-Fetori 

A man points a pipe connected to his house in Suluq area which experiences shortages in potable water amid contaminations of underground wells, near Benghazi, Libya, March 9, 2023. REUTERS/Esam Omran Al-Fetori 

A man fills jerry can with water in Suluq area which experiences shortages in potable water amid contaminations of underground wells, near Benghazi, Libya, March 9, 2023. REUTERS/Esam Omran Al-Fetori 

Diggers work in a field where contaminated soil from the fallout of the Fukushima nuclear plant was kept and which is now in the works to be converted back to a rice field, next to Jinichi Abe's rice field, in Namie, about 7 km from the crippled Fukushima Dai-Ichi nuclear plant, Fukushima Prefecture, Japan February 28, 2023. REUTERS/Kim Kyung-Hoon TPX IMAGES OF THE DAY 

A digger works in a field where contaminated soil from the fallout of the Fukushima nuclear plant was kept and which is now in the works to be converted back to a rice field, next to Jinichi Abe's rice field, in Namie, about 7 km from the crippled Fukushima Dai-Ichi nuclear plant, Fukushima Prefecture, Japan February 28, 2023. Picture taken with a drone. REUTERS/Kim Kyung-Hoon 

Jinichi Abe makes his way after posing in a field where contaminated soil from the fallout of the Fukushima nuclear plant was kept and which is now in the works to be converted back to a rice field, next to his rice field in Namie, about 7 km from the crippled Fukushima Dai-Ichi nuclear plant, Fukushima Prefecture, Japan February 28, 2023. REUTERS/Kim Kyung-Hoon 

Jinichi Abe poses in a field where contaminated soil from the fallout of the Fukushima nuclear plant was kept and which is now in the works to be converted back to a rice field, next to his rice field in Namie, about 7 km from the crippled Fukushima Dai-Ichi nuclear plant, Fukushima Prefecture, Japan February 28, 2023. REUTERS/Kim Kyung-Hoon 

People stand outside the Maiden Pharmaceuticals plant that was sealed by the Indian government officials in 2022, in Sonipat in the northern state of Haryana, India, February 2, 2023. In October 2022, the deaths of more than 70 Gambian children from Acute Kidney Injury were linked by global health officials to cough syrups made in India by Maiden Pharmaceuticals and contaminated with ethylene glycol (EG) and diethylene glycol (DEG). To match Special Report HEALTH-COUGHSYRUP/ REUTERS/Adnan Abidi 

Dave Hamm, an ethical substance peer navigator with the Vancouver Area Network of Drug Users (VANDU), distributes packets of drugs tested for contaminants, as the province of British Columbia decriminalized the possession of small amounts of cocaine, methamphetamine, MDMA and opioids like heroin, fentanyl and morphine, in the Downtown Eastside of Vancouver, British Columbia, Canada January 31, 2023. REUTERS/Jennifer Gauthier 

Dave Hamm, an ethical substance peer navigator with the Vancouver Area Network of Drug Users (VANDU), distributes packets of drugs tested for contaminants, as the province of British Columbia decriminalized the possession of small amounts of cocaine, methamphetamine, MDMA and opioids like heroin, fentanyl and morphine, in Downtown Eastside of Vancouver, British Columbia, Canada January 31, 2023. REUTERS/Jennifer Gauthier 

Dave Hamm, an ethical substance peer navigator with the Vancouver Area Network of Drug Users (VANDU), distributes packets of drugs tested for contaminants, as the province of British Columbia decriminalized the possession of small amounts of cocaine, methamphetamine, MDMA and opioids like heroin, fentanyl and morphine, in the Downtown Eastside of Vancouver, British Columbia, Canada January 31, 2023. REUTERS/Jennifer Gauthier 

A view of the submerged handicraft market at the Pink Lake (Lac Rose), officially known as Lake Retba after extreme floods washed away salt mounds and contaminated the lake and turned its famous waters from Pink to green, in Niaga, near Dakar, Senegal, January 22, 2023. REUTERS/ Ngouda Dione 

Dead fishes lie on the bank of the Pink Lake ( Lac Rose), officially known as Lake Retba after extreme floods washed away salt mounts and contaminated the lake and turned its famous waters from Pink to green, in Niaga, near Dakar, Senegal, January 17, 2023. REUTERS/ Zohra Bensemra 

A general view of the submerged tourism businesses at the Pink Lake (Lac Rose), officially known as Lake Retba, after extreme floods washed away salt mounts and contaminated the lake and turned its famous waters from pink to green, in Niaga, near Dakar, Senegal, January 17, 2023. REUTERS/ Zohra Bensemra 

A general view of the submerged tourism businesses at the Pink Lake (Lac Rose), officially known as Lake Retba, after extreme floods washed away salt mounts and contaminated the lake and turned its famous waters from pink to green, in Niaga, near Dakar, Senegal, January 17, 2023. REUTERS/ Zohra Bensemra 

A general view of the submerged tourism businesses at the Pink Lake (Lac Rose), officially known as Lake Retba, after extreme floods washed away salt mounts and contaminated the lake and turned its famous waters from pink to green, in Niaga, near Dakar, Senegal, January 17, 2023. REUTERS/ Zohra Bensemra 

Pirogues lie on the bank of the Pink Lake (Lac Rose), officially known as Lake Retba after extreme floods washed away salt mounts and contaminated the lake and turned its famous waters from Pink to green, in Niaga, near Dakar, Senegal, January 17, 2023. REUTERS/ Zohra Bensemra TPX IMAGES OF THE DAY 

Pirogues lie on the bank of the Pink Lake (Lac Rose), officially known as Lake Retba after extreme floods washed away salt mounts and contaminated the lake and turned its famous waters from Pink to green, in Niaga, near Dakar, Senegal, January 17, 2023. REUTERS/ Zohra Bensemra 

A general view of the submerged tourism businesses at the Pink Lake (Lac Rose), officially known as Lake Retba, after extreme floods washed away salt mounts and contaminated the lake and turned its famous waters from pink to green, in Niaga, near Dakar, Senegal, January 17, 2023. REUTERS/ Zohra Bensemra 

A general view of the submerged tourism businesses at the Pink Lake (Lac Rose), officially known as Lake Retba, after extreme floods washed away salt mounts and contaminated the lake and turned its famous waters from pink to green, in Niaga, near Dakar, Senegal, January 17, 2023. REUTERS/ Zohra Bensemra 

Dead fishes lie on the bank of the Pink Lake ( Lac Rose), officially known as Lake Retba after extreme floods washed away salt mounts and contaminated the lake and turned its famous waters from Pink to green, in Niaga, near Dakar, Senegal, January 17, 2023. REUTERS/ Zohra Bensemra 

Environmentalist Raul Padilla Borja, 50, from the organisation "Jaguar Wildlife Center" watches a video of a jaguar detected close to where the new Mayan Train route is being built, in Playa del Carmen, Quintana Roo, Mexico November 10, 2022. "The biggest threat facing jaguars is the loss of their habitat and fragmentation," said Borja. REUTERS/Jose Luis Gonzalez SEARCH "GONZALEZ MAYA TRAIN" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A member of the Mexican army and a member of the construction team monitor access to the construction site of section 6 of the new Mayan Train route, in Felipe Carrillo Puerto, Quintana Roo, Mexico, November 9, 2022. In the eyes of President Andres Manuel Lopez Obrador, the railway his government is building - known as the Tren Maya - will bring modern connectivity to areas for generations deprived of significant economic benefits. But pristine wilderness and ancient cave systems beneath the jungle floor are critically endangered by the railway and its hasty construction, droves of scientists and environmental activists say. REUTERS/Jose Luis Gonzalez SEARCH "GONZALEZ MAYA TRAIN" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Bats fly out of a cave located in the Calakmul Biosphere Reserve near where section 7 of the new Mayan train route is being built in Calakmul, Campeche, Mexico, November 8, 2022. In the eyes of President Andres Manuel Lopez Obrador, the railway his government is building - known as the Tren Maya - will bring modern connectivity to areas for generations deprived of significant economic benefits. But pristine wilderness and ancient cave systems beneath the jungle floor are critically endangered by the railway and its hasty construction, droves of scientists and environmental activists say. REUTERS/Jose Luis Gonzalez SEARCH "GONZALEZ MAYA TRAIN" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY TPX IMAGES OF THE DAY 

A section of cleared jungle is seen from above, during the construction of the new Mayan Train route close to the town of Buena Vista, Bacalar, Quintana Roo, Mexico, November 8, 2022. In the eyes of President Andres Manuel Lopez Obrador, the railway his government is building - known as the Tren Maya - will bring modern connectivity to areas for generations deprived of significant economic benefits. But pristine wilderness and ancient cave systems beneath the jungle floor are critically endangered by the railway and its hasty construction, droves of scientists and environmental activists say. Photo taken with a drone. REUTERS/Jose Luis Gonzalez SEARCH "GONZALEZ MAYA TRAIN" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY 

Ismael Lara, a tour guide, shows tourists a map of the area before visiting a bat cave located in the Calakmul Biosphere Reserve close to where section 7 of the new Mayan train route is being built, in Calakmul, Campeche, Mexico November 8, 2022. The railway "is splitting the jungle in half," said Lara, who fears the train will disrupt wildlife routes and attract too much development to fragile ecosystems. REUTERS/Jose Luis Gonzalez SEARCH "GONZALEZ MAYA TRAIN" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Children play during celebrations for The Faithful Departed in the town of Buena Vista close to where the new Mayan train route is being built, Bacalar, Quintana Roo, Mexico, November 8, 2022. In the eyes of President Andres Manuel Lopez Obrador, the railway his government is building - known as the Tren Maya - will bring modern connectivity to areas for generations deprived of significant economic benefits. But pristine wilderness and ancient cave systems beneath the jungle floor are critically endangered by the railway and its hasty construction, droves of scientists and environmental activists say. REUTERS/Jose Luis Gonzalez SEARCH "GONZALEZ MAYA TRAIN" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Women prepare food during celebrations for The Faithful Departed in the town of Buena Vista close to where the new Mayan train route is being built, in Bacalar, Quintana Roo, Mexico November 8, 2022. In the eyes of President Andres Manuel Lopez Obrador, the railway his government is building - known as the Tren Maya - will bring modern connectivity to areas for generations deprived of significant economic benefits. But pristine wilderness and ancient cave systems beneath the jungle floor are critically endangered by the railway and its hasty construction, droves of scientists and environmental activists say. REUTERS/Jose Luis Gonzalez SEARCH "GONZALEZ MAYA TRAIN" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

David Ku, 3, plays in a hammock during celebrations for The Faithful Departed in the town of Buena Vista close to where the new Mayan train route is being built, in Bacalar, Quintana Roo, Mexico, November 8, 2022. In the eyes of President Andres Manuel Lopez Obrador, the railway his government is building - known as the Tren Maya - will bring modern connectivity to areas for generations deprived of significant economic benefits. But pristine wilderness and ancient cave systems beneath the jungle floor are critically endangered by the railway and its hasty construction, droves of scientists and environmental activists say. REUTERS/Jose Luis Gonzalez SEARCH "GONZALEZ MAYA TRAIN" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Kazem Hussain, 52, applies ointment to the legs of his niece, Zahraa Ali Hassan, 7, to treat a skin problem the family says is caused by contaminated water, in Al Bu Ruwayyshid village, Diwaniya, Iraq, November 8, 2022. Zahraa's family say that others suffer with the same skin problems and many have diarrhoea due to the water supply. REUTERS/Alaa Al-Marjani SEARCH "CLIMATE MIDEAST WATER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY 

Kazem Hussain, 52, applies ointment to the hands of his niece, Zahraa Ali Hassan, 7, to treat a skin problem the family says is caused by contaminated water, in Al Bu Ruwayyshid village, Diwaniya, Iraq, November 8, 2022. Zahraa's family say that others suffer with the same skin problems and many have diarrhoea due to the water supply. REUTERS/Alaa Al-Marjani SEARCH "CLIMATE MIDEAST WATER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A residential area, which is being developed for section 5 of the new Mayan Train route, is seen from above in Playa del Carmen, Quintana Roo, Mexico November 7, 2022. In the eyes of President Andres Manuel Lopez Obrador, the railway his government is building - known as the Tren Maya - will bring modern connectivity to areas for generations deprived of significant economic benefits. But pristine wilderness and ancient cave systems beneath the jungle floor are critically endangered by the railway and its hasty construction, droves of scientists and environmental activists say. Photo taken with a drone. REUTERS/Jose Luis Gonzalez SEARCH "GONZALEZ MAYA TRAIN" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Butterflies are seen on deforested land where section 5 of the new Mayan Train route is being built, in Solidaridad, Quintana Roo, Mexico, November 6, 2022. In the eyes of President Andres Manuel Lopez Obrador, the railway his government is building - known as the Tren Maya - will bring modern connectivity to areas for generations deprived of significant economic benefits. But pristine wilderness and ancient cave systems beneath the jungle floor are critically endangered by the railway and its hasty construction, droves of scientists and environmental activists say. REUTERS/Jose Luis Gonzalez SEARCH "GONZALEZ MAYA TRAIN" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.