- Atmosphere of Early Earth May Have Been Half As Thick As Today http://www.space.com/32858-early-earth-atmosphere-was-half-as-thick.html 5 comments space
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- Space.com: NASA, Space Exploration and Astronomy News https://space.com 152 comments
- Confirmed: Oldest Fragment of Early Earth is 4.4 Billion Years Old | Live Science http://www.livescience.com/43584-earth-oldest-rock-jack-hills-zircon.html 20 comments
- Live Science: The Most Interesting Articles, Mysteries & Discoveries http://www.livescience.com/ 1 comment
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