A volunteer builds a plastic pyramid to mark the World Cleanup Day in Giza, Egypt, on Sept. 15, 2022. (Xinhua/Ahmed Gomaa)
Volunteers build a plastic pyramid to mark the World Cleanup Day in Giza, Egypt, on Sept. 15, 2022. (Xinhua/Ahmed Gomaa)
Volunteers build a plastic pyramid to mark the World Cleanup Day in Giza, Egypt, on Sept. 15, 2022. (Xinhua/Ahmed Gomaa)
Photo taken on Sept. 16, 2022 shows a pyramid built with compacted plastic bottles to mark the World Cleanup Day in Giza, Egypt. (Xinhua/Ahmed Gomaa)
A man walks past a pyramid built with compacted plastic bottles to mark the World Cleanup Day in Giza, Egypt, on Sept. 16, 2022. (Xinhua/Ahmed Gomaa)