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Variable cloudiness
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Partly cloudy and chilly
| Today | Normal | Record | 5/24/2012 | |
|---|---|---|---|---|
| High | 69° | 77° | 97° (1999) | 71° |
| Low | 42° | 54° | 35° (1975) | 40° |
Rises at 5:17 AM with 15:19 of sunlight, then sets at 8:36 PM
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.