Earth Day in images from around the globe

What did Earth Day around the globe look like? As usual, The Big Picture feature at The Boston Globe does an awesome job of capturing the theme of event in compelling images from every corner of the world, including:

• A view of the America’s from NASA’s Messenger probe;
• A wind farm in North Dakota;
• A giant wind turbine being assembled in Hamburg;
• The Luz Power Tower in Israel’s Negev Desert;
• A solar array in Portugal;
• A time-lapse image of the night sky viewed from Cape Cornwall;
• Belgrade’s polluted Sava River;
• An oil spill cleanup near Tripoli;
• A drought-stricken field in China.