<img src="https://media.nu.nl/m/6fnxpqcaw50q_sqr256.jpg/monumenten-wereldwijd-in-het-donker-vanwege-earth-hour.jpg" /><br>Buildings worldwide were turned off from 8:30 p.m. to 9:30 p.m. on Saturday due to Earth Hour. The action, started by the World Wildlife Fund, draws attention to the effects of climate change. <hr> <br><a href="https://www.nu.nl/buitenland/6256872/monumenten-wereldwijd-in-het-donker-vanwege-earth-hour.html">Source </a> <hr>