Cardinal Luis Antonio Tagle of Manila is calling on Catholics to give the planet Earth "a little rest" by taking part in the worldwide observance of Earth Hour.
He said the event is a great opportunity for people to take a simple step to show that they care about the environment.
This year, Earth Hour will take place on March 19 from 8:30 p.m. to 9:30 p.m. as part of a global symbolic demand for action on climate change.
Organized nine years ago by the World Wildlife Fund, the annual event is marked by governments, citizens, and environmental activists who turn off electricity for an hour.
"Let's turn off our appliances and other things that use electricity to give our world a little rest," Cardinal Tagle said.
Echoing Pope Francis' call for "ecological justice," he said the people should show that they care for the environment and help reduce the impacts of climate change.