Search for: "Louis W Sparks" Results 21 - 22 of 22
Sorted by Relevance | Sort by Date
RSS Subscribe: 20 results | 100 results
23 Dec 2009, 4:42 pm by admin
It refers to 350 parts per million of carbon dioxide in the atmosphere, the highest concentration that some leading scientists say the world can handle without sparking dangerous climate effects. [read post]