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Jul 18, 2015, 7:40 am25 pts
ENNNobody knows what our skies looked like before fossil fuel burning began; today, about half the cloud droplets in Northern Hemisphere skies formed around particles of pollution. Cloudy skies help regulate our planet’s climate and yet the answers to many fundamental questions about cloud formation remain…
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Leaf through planet Earths environmental headlines in one convenient place. Read, share and discover the latest on ecology, science and green living from the web's most popular sites.









