Partly sunny with a thunderstorm in parts of the area
Severe evening thunderstorms, watch for a severe thunderstorm late; otherwise, cloudy
Rises at 6:15 AM with 14:51 of sunlight, then sets at 9:06 PM
Rises at --:-- with of moolight, then sets at 10:06 AM
May 23, 2013; 5:00 AM ET A team has developed a model to determine the influences of humans and climate on vegetation changes. Valerie Smock explains what has the greatest effect.