https://www.climatechangenews.com/2014/03/20/led-costs-to-halve-as-efficiency-doubles-by-2020-us-dept-of-energy/ Climate change news, analysis, commentary, video and podcasts focused on developments in global climate politics Thu, 20 Mar 2014 14:26:58 +0000 hourly 1 https://wordpress.org/?v=6.6.1