Shanghai landmarks go dark for Earth Hour

Many landmark buildings in Shanghai, including the 632-meter Shanghai Tower - China's tallest building - as well as the World Financial Center and Oriental Pearl Tower, turned off their lights for an hour on Saturday as part of a global effort to draw attention to climate change.

The Empire State Building and United Nations headquarters in New York joined other iconic buildings and monuments around the world by plunging into darkness for 60 minutes.

The Eiffel Tower, the Kremlin, the Acropolis in Athens and Sydney's Opera House also dimmed their lights as millions of people from some 170 countries and territories were expected to take part in Earth Hour, the annual bid to highlight global warming caused by the burning of coal, oil and gas to drive cars and power plants.