A general view of waste from Guatemala's largest landfill on the Las Vacas river basin ahead of World Water Day in Guatemala City, Guatemala, March 21, 2023. REUTERS/Josue Decavele 

A man searches for scrap metal in the polluted waters of the Las Vacas river, where informal workers salvage items from Guatemala's largest landfill, ahead of World Water Day in Guatemala City, Guatemala, March 21, 2023. REUTERS/Josue Decavele 

A man known as "Canche" poses for a portrait after working in the polluted waters of the Las Vacas river, where informal workers collect scrap metal from Guatemala's largest landfill, ahead of World Water Day in Guatemala City, Guatemala March 21, 2023. REUTERS/Josue Decavele 

A general view of waste from Guatemala's largest landfill on the Las Vacas river basin ahead of World Water Day in Guatemala City, Guatemala, March 21, 2023. REUTERS/Josue Decavele 

A general view of waste from Guatemala's largest landfill on the Las Vacas river basin ahead of World Water Day in Guatemala City, Guatemala March 21, 2023. REUTERS/Josue Decavele 

A man carries scrap metal collected from the polluted waters of the Las Vacas river, where informal workers salvage items from Guatemala's largest landfill, ahead of World Water Day in Guatemala City, Guatemala, March 21, 2023. REUTERS/Josue Decavele 

A men searches for scrap metal in the polluted waters of the Las Vacas river, where informal workers salvage items from Guatemala's largest landfill, ahead of World Water Day in Guatemala City, Guatemala March 21, 2023. REUTERS/Josue Decavele 

Man searches for scrap metal in the polluted waters of the Las Vacas river, where informal workers salvage items from Guatemala's largest landfill, ahead of World Water Day in Guatemala City, Guatemala, March 21, 2023. REUTERS/Josue Decavele 

Man searches for scrap metal in the polluted waters of the Las Vacas river, where informal workers salvage items from Guatemala's largest landfill, ahead of World Water Day in Guatemala City, Guatemala, March 21, 2023. REUTERS/Josue Decavele 

A man searches for scrap metal in the polluted waters of the Las Vacas river, where informal workers salvage items from Guatemala's largest landfill, ahead of World Water Day in Guatemala City, Guatemala March 21, 2023. REUTERS/Josue Decavele 

A man looks at the polluted waters of the Las Vacas river, where informal workers salvage items from Guatemala's largest landfill, ahead of World Water Day in Guatemala City, Guatemala March 21, 2023. REUTERS/Josue Decavele 

A view from Ponte di Valenza shows Po's dry riverbed, as parts of Italy's longest river and largest reservoir of freshwater have dried up due to the worst drought in the last 70 years, in Valenza, Italy March 21, 2023. REUTERS/Claudia Greco 

A view from Ponte di Valenza shows Po's dry riverbed, as parts of Italy's longest river and largest reservoir of freshwater have dried up due to the worst drought in the last 70 years, in Valenza, Italy March 21, 2023. REUTERS/Claudia Greco 

Los Angeles school workers protest in front of LAUSD headquarters during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

Los Angeles school workers protest in front of LAUSD headquarters during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

Los Angeles school workers protest in front of LAUSD headquarters during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

Los Angeles school workers protest in front of LAUSD headquarters during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

Los Angeles school workers protest in front of LAUSD headquarters during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

Los Angeles school workers protest in front of LAUSD headquarters during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

Los Angeles school workers protest in front of LAUSD headquarters during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

Los Angeles school workers protest in front of LAUSD headquarters during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

Los Angeles school workers protest in front of LAUSD headquarters during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

Los Angeles school workers protest in front of LAUSD headquarters during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

Los Angeles school workers protest in front of LAUSD headquarters during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

Los Angeles school workers protest in front of LAUSD headquarters during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

Los Angeles school workers protest in front of LAUSD headquarters during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

Los Angeles school workers protest in front of LAUSD headquarters during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

Los Angeles school workers protest in front of LAUSD headquarters during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

Los Angeles school workers protest in front of LAUSD headquarters during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

Los Angeles school workers protest in front of LAUSD headquarters during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

Los Angeles school workers protest in front of Buchanan Street Elementary School during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles (LAUSD), Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

Los Angeles school workers protest in front of Thomas Starr King Middle School during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles (LAUSD), Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

Los Angeles school workers protest in front of Irving STEAM Magnet School during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles (LAUSD), Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

Los Angeles school workers protest in front of Buchanan Street Elementary School during the first day of a walkout over contract negotiations that closes the country’s second largest school system in Los Angeles (LAUSD), Los Angeles, California, U.S., March 21, 2023. REUTERS/Aude Guerrucci 

A petrol bomb explodes near riot police as they clash with protesters during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Stoyan Nenov 

University students hold flags as they demonstrate during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Elias Marcou 

Riot police clash with protesters during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Elias Marcou 

University students shout slogans as they demonstrate during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Elias Marcou 

A man shouts slogans at a demonstration during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Stoyan Nenov 

People carry a placard depicting Greek Prime Minister Kyriakos Mitsotakis with a red "X" sign as they demonstrate during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Stoyan Nenov 

Protesters are detained by riot police during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Elias Marcou 

Protesters clash with riot police during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Elias Marcou TPX IMAGES OF THE DAY 

Protesters clash with riot police during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Elias Marcou 

People demonstrate during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Stoyan Nenov 

People demonstrate during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Stoyan Nenov 

People demonstrate during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Stoyan Nenov 

Riot police clash with protesters during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Stoyan Nenov 

Riot police clash with protesters during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Stoyan Nenov 

A petrol bomb explodes near riot police as they clash with protesters during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Stoyan Nenov 

A petrol bomb explodes near riot police as they clash with protesters during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Stoyan Nenov TPX IMAGES OF THE DAY 

A petrol bomb explodes near riot police as they clash with protesters during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Stoyan Nenov 

Protesters clash with riot police during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Alkis Konstantinidis 

Protesters clash with riot police during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Alkis Konstantinidis 

Protesters flee during clashes as they demonstrate during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Alkis Konstantinidis 

Protesters clash with riot police during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Alkis Konstantinidis TPX IMAGES OF THE DAY 

Protesters clash with riot police during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Alkis Konstantinidis 

People demonstrate during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Alkis Konstantinidis 

A man walks next to a moored passenger ferries during a 24-hour nationwide strike over the country's deadliest train disaster last month, at the port of Piraeus, Greece, March 16, 2023. REUTERS/Stoyan Nenov 

A police car is seen at the entrance of Athens central train station during a 24-hour nationwide strike over the country's deadliest train disaster last month, Athens, Greece, March 16, 2023. REUTERS/Stoyan Nenov