By MICHAEL HOLICK, The Providence Journal
We need to spend more time in the sun
BOSTON -- Life on our planet requires sunlight to survive. And most organisms work hard to get it. Jungle reptiles often compete with each other to find the highest, warmest surfaces for sunbathing. Rain-forest plants race to fill rare, sunny openings in the thick canopy left by fallen trees. And some flowers even bend their stems to follow the sun's movement across the sky.


Recent comments
12 min 42 sec ago
14 min 55 sec ago
4 hours 59 min ago
7 hours 28 min ago
7 hours 37 min ago
7 hours 39 min ago
10 hours 9 min ago
10 hours 35 min ago
10 hours 41 min ago
13 hours 10 min ago