A worker pulls the tape from a traffic sign indicating the ban on vehicles with Euro 5 diesel engines, on the Mittlerer Ring in Munich, Germany, February 1, 2023. REUTERS/Lukas Barth 

A worker pulls the tape from a traffic sign indicating the ban on vehicles with Euro 5 diesel engines, on the Mittlerer Ring in Munich, Germany, February 1, 2023. REUTERS/Lukas Barth 

A longtime exposure shows cars driving on the Mittlerer Ring after the driving ban for vehicles with Euro 5 diesel engines came into force in Munich, Germany, February 1, 2023. REUTERS/Lukas Barth 

A traffic sign indicates the ban on vehicles with Euro 5 diesel engines, on the Mittlerer Ring in Munich, Germany, February 1, 2023. REUTERS/Lukas Barth 

Cars drive to the Mittlerer Ring after the driving ban for vehicles with Euro 5 diesel engines came into force in Munich, Germany, February 1, 2023. REUTERS/Lukas Barth 

Cars drive on the Mittlerer Ring after the driving ban for vehicles with Euro 5 diesel engines came into force in Munich, Germany, February 1, 2023. REUTERS/Lukas Barth 

Cars drive on the Mittlerer Ring after the driving ban for vehicles with Euro 5 diesel engines came into force in Munich, Germany, February 1, 2023. REUTERS/Lukas Barth 

Cars drive on the Mittlerer Ring after the driving ban for vehicles with Euro 5 diesel engines came into force in Munich, Germany, February 1, 2023. REUTERS/Lukas Barth 

A traffic sign indicates the ban on vehicles with Euro 5 diesel engines, on the Mittlerer Ring in Munich, Germany, February 1, 2023. REUTERS/Lukas Barth 

A longtime exposure shows cars driving on the Mittlerer Ring after the driving ban for vehicles with Euro 5 diesel engines came into force in Munich, Germany, February 1, 2023. REUTERS/Lukas Barth 

A longtime exposure shows cars driving on the Mittlerer Ring after the driving bans for vehicles with Euro 5 diesel engines came into force in Munich, Germany, February 1, 2023. REUTERS/Lukas Barth 

A worker pulls the tape from a traffic sign indicating the ban on vehicles with Euro 5 diesel engines, on the Mittlerer Ring in Munich, Germany, February 1, 2023. REUTERS/Lukas Barth 

Engineers stand next to the new river water large-scale heat pumps at energy supplier BTB in Schoeneweide, Berlin, Germany, January 6, 2023. REUTERS/Christian Mang 

Berlin's Mayor Franziska Giffey speaks with an engineer as she visits energy supplier BTB to see the new river water large-scale heat pumps, in Schoeneweide, Berlin, Germany, January 6, 2023. REUTERS/Christian Mang 

A cadet of the Tyumen Higher Military Engineer Command School wearing a bulletproof vest and carrying an assault rifle competes in a 25-metre race during a winter swimming tournament in Tyumen, Russia December 11, 2022. REUTERS/Alexey Malgavko 

A cadet of the Tyumen Higher Military Engineer Command School wearing a bulletproof vest and carrying an assault rifle competes in a 25-metre race during a winter swimming tournament in Tyumen, Russia December 11, 2022. REUTERS/Alexey Malgavko 

A cadet of the Tyumen Higher Military Engineer Command School wearing a bulletproof vest and carrying an assault rifle gets out of the water after a 25-metre race at a winter swimming tournament in Tyumen, Russia December 11, 2022. REUTERS/Alexey Malgavko 

A cadet of the Tyumen Higher Military Engineer Command School wearing a bulletproof vest and carrying an assault rifle competes in 25-metre race during a winter swimming tournament in Tyumen, Russia December 11, 2022. REUTERS/Alexey Malgavko TPX IMAGES OF THE DAY 

A fire engine is seen parked inside a temporary cover after the previous office of Santa Rosa Fire Station 5 was burned to the ground in a wildfire five years ago, in Santa Rosa, California U.S., December 2, 2022. REUTERS/ Sharon Bernstein 

Dr Stanford Chidziva, acting director of Green Hydrogen, looks at the solar panels at the site where Keren Energy constructed the first proof of concept of green hydrogen production facility in Africa at Namaqua Engineering in Vredendal, in collaboration with The Green Hydrogen Institute for Advanced Materials Chemistry (SAIAMC) at the University of the Western Cape, South Africa, November 15, 2022. REUTERS/Esa Alexander 

Dr Stanford Chidziva, acting director of Green Hydrogen, looks at the solar panels at the site where Keren Energy constructed the first proof of concept of green hydrogen production facility in Africa at Namaqua Engineering in Vredendal, in collaboration with The Green Hydrogen Institute for Advanced Materials Chemistry (SAIAMC) at the University of the Western Cape, South Africa, November 15, 2022. REUTERS/Esa Alexander 

Dr Stanford Chidziva, acting director of Green Hydrogen, looks at the solar panels at the site where Keren Energy constructed the first proof of concept of green hydrogen production facility in Africa at Namaqua Engineering in Vredendal, in collaboration with The Green Hydrogen Institute for Advanced Materials Chemistry (SAIAMC) at the University of the Western Cape, South Africa, November 15, 2022. REUTERS/Esa Alexander 

Dr Stanford Chidziva, acting director of Green Hydrogen, looks at the hydrogen electrolyser unit in a container at the site where Keren Energy constructed the first proof of concept of green hydrogen production facility in Africa at Namaqua Engineering in Vredendal, in collaboration with The Green Hydrogen Institute for Advanced Materials Chemistry (SAIAMC) at the University of the Western Cape, South Africa, November 15, 2022. REUTERS/Esa Alexander 

An electric vehicle is parked at the site where Keren Energy constructed the first proof of concept of green hydrogen production facility in Africa at Namaqua Engineering in Vredendal, in collaboration with The Green Hydrogen Institute for Advanced Materials Chemistry (SAIAMC) at the University of the Western Cape, South Africa, November 15, 2022. REUTERS/Esa Alexander 

Dr Stanford Chidziva, acting director of Green Hydrogen, looks at the solar panels at the site where Keren Energy constructed the first proof of concept of green hydrogen production facility in Africa at Namaqua Engineering in Vredendal, in collaboration with The Green Hydrogen Institute for Advanced Materials Chemistry (SAIAMC) at the University of the Western Cape, South Africa, November 15, 2022. REUTERS/Esa Alexander 

Dr Stanford Chidziva, acting director of Green Hydrogen, looks at the solar panels at the site where Keren Energy constructed the first proof of concept of green hydrogen production facility in Africa at Namaqua Engineering in Vredendal, in collaboration with The Green Hydrogen Institute for Advanced Materials Chemistry (SAIAMC) at the University of the Western Cape, South Africa, November 15, 2022. REUTERS/Esa Alexander 

Dr Stanford Chidziva, acting director of Green Hydrogen, looks at hydrogen electrolyser unit in a container where Keren Energy constructed the first proof of concept of green hydrogen production facility in Africa at Namakwa Engineering in Vredendal, in collaboration with The Green Hydrogen Institute for Advanced Materials Chemistry (SAIAMC) at the University of the Western Cape, South Africa, November 15, 2022. REUTERS/Esa Alexander 

Dr Stanford Chidziva, acting director of Green Hydrogen, looks at the solar panels at the site where Keren Energy constructed the first proof of concept of green hydrogen production facility in Africa at Namaqua Engineering in Vredendal, in collaboration with The Green Hydrogen Institute for Advanced Materials Chemistry (SAIAMC) at the University of the Western Cape, South Africa, November 15, 2022. REUTERS/Esa Alexander 

Dr Stanford Chidziva, acting director of Green Hydrogen, looks at the solar panels at the site where Keren Energy constructed the first proof of concept of green hydrogen production facility in Africa at Namaqua Engineering in Vredendal, in collaboration with The Green Hydrogen Institute for Advanced Materials Chemistry (SAIAMC) at the University of the Western Cape, South Africa, November 15, 2022. REUTERS/Esa Alexander 

Dr Stanford Chidziva, acting director of Green Hydrogen, looks at hydrogen electrolyser unit in a container where Keren Energy constructed the first proof of concept of green hydrogen production facility in Africa at Namakwa Engineering in Vredendal, in collaboration with The Green Hydrogen Institute for Advanced Materials Chemistry (SAIAMC) at the University of the Western Cape, South Africa, November 15, 2022. REUTERS/Esa Alexander 

Executive director of Keren Energy, George van Rensburg and Dr Stanford Chidziva, acting director of Green Hydrogen, look at the hydrogen electrolyser unit in a container at the site where Keren Energy constructed the first proof of concept of green hydrogen production facility in Africa at Namaqua Engineering in Vredendal, in collaboration with The Green Hydrogen Institute for Advanced Materials Chemistry (SAIAMC) at the University of the Western Cape, South Africa, November 15, 2022. REUTERS/Esa Alexander 

Dr Stanford Chidziva, acting director of Green Hydrogen, looks at the solar panels at the site where Keren Energy constructed the first proof of concept of green hydrogen production facility in Africa at Namaqua Engineering in Vredendal, in collaboration with The Green Hydrogen Institute for Advanced Materials Chemistry (SAIAMC) at the University of the Western Cape, South Africa, November 15, 2022. REUTERS/Esa Alexander 

An aerial view shows a firefighter who secures the area near damaged houses and debris following a tornado in Bihucourt, northern France, October 25, 2022. REUTERS/Pascal Rossignol 

An engineer works on Electricity Generation Turbines partially fuelled by Green Hydrogen belonging to a new project ahead of November's COP27 climate summit, in Sharm El-Sheikh, Egypt, October 20, 2022. REUTERS/Sayed Sheasha 

Engineers walk next to solar panels installed near to mountains and that belong to a new project, ahead of November's COP27 climate summit, in Sharm El-Sheikh in Egypt, October 20, 2022. REUTERS/Sayed Sheasha 

Environmental engineer Hamdi Hached poses during an interview with Reuters, in Kerkennah Islands, off Sfax, Tunisia, October 22, 2022. REUTERS/Jihed Abidellaoui 

Agricultural engineer Maria Santolaya examines vines in a research vineyard in Haro, Spain, October 6, 2022. REUTERS/Vincent West 

Agricultural engineer Maria Santolaya stands near vines in a research vineyard in Cellorigo, Spain, October 6, 2022. REUTERS/Vincent West 

Agricultural engineer Maria Santolaya examines grapes at a research vineyard in Haro, Spain, October 6, 2022. REUTERS/Vincent West 

Agricultural engineer Saif Muhammad checks plants at Tulima, a farm that uses climate-controlled greenhouses and an LED lighting system in an attempt to increase yields while saving water and energy, in Beheira, Egypt, September 8, 2022. REUTERS/Hanaa Habib 

Flames grow next to a fire engine as the Fairview Fire burns near Hemet, California, U.S., September 7, 2022. REUTERS/David Swanson 

Flames grow next to a fire engine as the Fairview Fire burns near Hemet, California, U.S., September 7, 2022. REUTERS/David Swanson 

Flames grow next to a fire engine as the Fairview Fire burns near Hemet, California, U.S., September 7, 2022. REUTERS/David Swanson 

Engineers perform checks on Europe's new MTG-I1 satellite designed to improve weather forecasting at the Thales Alenia Space plant in Cannes, France September 7, 2022. REUTERS/Tim Hepher 

Engineers perform checks on Europe's new MTG-I1 satellite designed to improve weather forecasting at the Thales Alenia Space plant in Cannes, France September 7, 2022. REUTERS/Tim Hepher 

An engine drives near the Fairview Fire burns near Hemet, California, U.S., September 6, 2022. REUTERS/David Swanson 

Firefighter shower water from a fire engine to contain a wildfire as it continues to burn in a forest near the town of Hrensko, Czech Republic, July 26, 2022. REUTERS/David W Cerny 

Firefighter shower water from a fire engine to contain a wildfire as it continues to burn in a forest near the town of Hrensko, Czech Republic, July 26, 2022. REUTERS/David W Cerny 

Gaza University engineering expert Ayed Zuhud speaks to Reuters during an interview in Gaza City, July 24, 2022. REUTERS/ Ibraheem Abu Mustafa 

People slide down the waterslide in the public bath Schafbergbad during a heatwave in Vienna, Austria, July 20, 2022. REUTERS/Lisa Leutner TPX IMAGES OF THE DAY 

Firefighters stand in front of a fire engine in the aftermath of the fire in Wennington, Essex, Britain, July 20, 2022. REUTERS/Tony O'Brien 

Ecological engineer Louiza Wise anchors a prototype Emerald Tutu in Chelsea Creek, which leads to Boston Harbor, in Boston, Massachusetts, U.S., July 12, 2022. The Emerald Tutu project is testing small floating islands, with marsh grasses growing above the waterline and seaweed below, that could be deployed in larger networks to dampen incoming wave energy and retard storm surge in order to reduce flooding ashore and increase coastal resilience in the face of climate change. REUTERS/Brian Snyder 

Ecological engineer Louiza Wise and Phd student Tyler McCormack anchor a prototype Emerald Tutu in Chelsea Creek, which leads to Boston Harbor, in Boston, Massachusetts, U.S., July 12, 2022. The Emerald Tutu project is testing small floating islands, with marsh grasses growing above the waterline and seaweed below, that could be deployed in larger networks to dampen incoming wave energy and retard storm surge in order to reduce flooding ashore and increase coastal resilience in the face of climate change. REUTERS/Brian Snyder 

A firefighting helicopter drops water on a wildfire that broke out on the hillside next to the Griffith Observatory in Los Angeles, California, U.S., May 17, 2022. REUTERS/David Swanson 

Fallen trees are blocking the A487 in Derwenlas, Wales, Britain, February 18, 2022. REUTERS/Carl Recine 

Network Rail engineers clear fallen trees that are blocking the A487 in Derwenlas, Wales, Britain, February 18, 2022. REUTERS/Carl Recine 

Network Rail engineers clear fallen trees that are blocking the A487 in Derwenlas, Wales, Britain, February 18, 2022. REUTERS/Carl Recine 

Network Rail engineers clear fallen trees that are blocking the A487 in Derwenlas, Wales, Britain, February 18, 2022. REUTERS/Carl Recine 

A Network Rail engineer clears fallen trees that are blocking the A487 in Derwenlas, Wales, Britain, February 18, 2022. REUTERS/Carl Recine 

A Network Rail engineer clears fallen trees that are blocking the A487 in Derwenlas, Wales, Britain, February 18, 2022. REUTERS/Carl Recine