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FILE - GM workers use human assistance automation to weld vehicle doors at the General Motors assembly plant during the COVID-19 pandemic in Oshawa, Ontario, March 19, 2021. (Nathan Denette/The Canadian Press via AP, File)

Nigeria faces its worst cost-of-living crisis in a generation after the government ended costly subsidies that made petrol affordable for many in Africa’s most populous country. Now the government is trying to cut transportation costs by almost 50% by tapping its huge natural gas reserves and aiming to convert a million vehicles. But the process has been slow, and misinformation and lack of infrastructure are major issues. Some drivers even fear their cars will explode.

Thessaloniki, Greece’s second-largest city, is opening a new subway system, blending ancient archaeological treasures with modern transit technology like driverless trains and platform screen doors. The project, which began in 2003, uncovered over 300,000 artifacts, including a Roman-era thoroughfare and Byzantine relics, many of which are now displayed in its 13 stations. Despite delays caused by preserving these findings, the inaugural line has been completed, with a second line set to open next year.

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An ancient site at the newly built Agias Sofias metro station ahead of its Nov. 30 official opening, in Thessaloniki, northern Greece, Friday, Nov. 22, 2024 – part of the city's long-delayed subway system showcasing archaeological finds from decades of construction. (AP Photo/Giannis Papanikos)

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The newly built New Railway Station metro station ahead of its Nov. 30 official opening, in Thessaloniki, northern Greece, Friday, Nov. 22, 2024 – part of the city's long-delayed subway system showcasing archaeological finds from decades of construction. (AP Photo/Giannis Papanikos)

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Ancient antiquities are displayed at the newly built Agias Sofias metro station ahead of its Nov. 30 official opening, in Thessaloniki, northern Greece, Friday, Nov. 22, 2024 – part of the city's long-delayed subway system showcasing archaeological finds from decades of construction. (AP Photo/Giannis Papanikos)

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Metro wagons are parked at the newly built Pylaia depot ahead of its Nov. 30 official opening, in Thessaloniki, northern Greece, Friday, Nov. 22, 2024 – part of the city's long-delayed subway system showcasing archaeological finds from decades of construction. (AP Photo/Giannis Papanikos)

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The newly built Agias Sofias metro station ahead of its Nov. 30 official opening, in Thessaloniki, northern Greece, Friday, Nov. 22, 2024 – part of the city's long-delayed subway system showcasing archaeological finds from decades of construction. (AP Photo/Giannis Papanikos)

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Ancient antiquities are displayed at the newly built Agias Sofias metro station ahead of its Nov. 30 official opening, in Thessaloniki, northern Greece, Friday, Nov. 22, 2024 – part of the city's long-delayed subway system showcasing archaeological finds from decades of construction. (AP Photo/Giannis Papanikos)