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A first for Jakarta: A banner on Jl. Sudirman in Central Jakarta reminds residents to observe Earth Hour by switching off all electronic appliances and lights Saturday, from 8:30 p.m. to 9:30 p.m. JP/Ricky YudhistiraClimate change is attributable to human activities. Primary solutions, therefore, need to come from humans, from changes in individual behavior.The world’s leading climate scientists, the Intergovernmental Panel on Climate Change (IPCC), state that changes in the atmosphere, the oceans, glaciers and ice caps now show unequivocally that the world is warming due to human activities.This human-induced climate change will profoundly affect water and other natural resources, biodiversity and the economy of the globe, including across Indonesia, which, in turn, will have negative impacts on rural and urban populations across the country.Andrea Liverani, in a background pape...