
A man cycles along a park connector along the Dover Forest in Singapore, on April 20, 2021. Earth Day, which falls on April 22 annually, aims to raise public awareness about the environment and calls for people to protect the Earth with action.Photo:Xinhua

An ant moves about in the forest near the Central Catchment Nature Reserve in Singapore, on April 21, 2021. Earth Day, which falls on April 22 annually, aims to raise public awareness about the environment and calls for people to protect the Earth with action.Photo:Xinhua

People walk in the forest of the Central Catchment Nature Reserve in Singapore, on April 17, 2021. Earth Day, which falls on April 22 annually, aims to raise public awareness about the environment and calls for people to protect the Earth with action. Photo:Xinhua

Photo taken on April 20, 2021 shows a view of the Dover Forest in Singapore. Earth Day, which falls on April 22 annually, aims to raise public awareness about the environment and calls for people to protect the Earth with action.Photo:Xinhua