Monuments across New Zealand went dark on Saturday as the country kicked off the worldwide Earth Hour event. The global movement encourages nations to switch off their lights for an hour to bring attention to the issues of nature loss and climate change. Auckland monuments including the Sky Tower and Harbour Bridge and Wellington’s parliament buildings went dark at 8:30 pm (0730 GMT). Later, other monuments across the globe, including the Sydney Opera House, the London Eye and the Eiffel Tower, will switch off their lights in solidarity. Now in its 18th year, coordinator WWF International is a…