Sikhs around the world are taking part in a scheme to plant a million new trees as a “gift to the entire planet”. The project aims to reverse environmental decline and help people reconnect with nature as part of celebrations marking 550 years since the birth of the founder of Sikhism, Guru Nanak.

Riding their bikes together offers this group of Sikhs an all-American way to celebrate their faith, in a country where it often makes them targets. By Teresa Mathew.