Daily Roundup: January 12, 2011

Friendlier Skies: Southwest Airlines is cutting its emissions by implementing new landing procedures. TreeHugger and Environmental Leader

Sensing Improvement: A network of 100 greenhouse-gas sensors, to be called Earth Networks, will soon exist at various sites around the planet. New York Times

Does Lightning Matter? Thunderstorms emit bursts of antimatter into space, researchers discovered. Los Angeles Times

Clear Shot: In 2010, 333 rhinos were illegally killed in South Africa, a record number, considering that the 2009 number was 122. ENN

Deadly Downpour: Dozens were killed in various towns near Rio de Janeiro, Brazil, due to one day's worth of heavy rain. Reuters

--Shirley Mak