The second Green Shabbat takes place this weekend, backed by rabbis from across the religious spectrum.
Chief Rabbi Ephraim Mirvis is among those who have released video messsges in support of the event, promoted by Ecosynagogue and the Board of Deputies.
"The coronavirus lockdown has highlighted for us in so many ways how irresponsible our societies have been with regard to the environment," Rabbi Mrivis said.
Other videos have been issued by Reform's Senior Rabbi Laura-Janner Klausner, Rabbi Charley Baginsky, interim joint-director of Liberal Judaism, Muswell Hill United Synagogue's Rabbi David Mason and Board vice-president Edwin Shuker.
Rabbi Baginsky recalled how during lockdown, she opened the window and was conscious of hearing the birds and not feeling pollution come flooding in, Perhaps for nature, this period had "really been its Shabbat of Shabbats," she said.
The cross-communal initiative, marking London Climate Action Week, also organised an online seminar.