Check out this video showing terrified visitors inside the Washington Monument as a 5.8-magnitude earthquake shook the U.S. East Coast on August 23, 2011.
A geomagnetic storm is in progress. If it's nighttime, and you're at a high latitude, go outside and look for auroras! And quit worrying, you. Just enjoy.
Green roofs might be able to compensate for urban habitat lost at ground level, but there isn't much information of how well they match ground-based habitats.
People around the world are mourning the death of Wangari Muta Maathai, Africa's first woman Nobel laureate and Kenya's foremost environmental conservationist.