Science1000-foot tall observatory tower being built in Amazon to monitor climate change An observatory tower rising in the Amazon rainforest will gather data that scientists hope could unravel more information about greenhouse gases, particularly carbon dioxide, and climate change.by Rhodi Lee
CultureDon't understand global warming? Let 97 climate scientists explain it to youby Laura Rosenfeld
ScienceCarbon emissions rise at record speed, WMO puts oceans in center of climate discussionsby Rebecca Kaplan
WATCH: Runner Spends Year Using Exercise Tracker to Create Elaborate Stick Figure Art on City Streets