Earth's CO2 Passes the 400 PPM Threshold - Maybe Permanently by Brian Kahn | Free Audiobook

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Title: Earth's CO2 Passes the 400 PPM Threshold - Maybe Permanently
Author: Brian Kahn
Narrator: Jef Holbrook
Format: Unabridged
Length: 4 mins
Language: English
Release date: 10-03-16
Publisher: Scientific American
Genres: Science & Technology, Magazine & Radio

Summary:
In the centuries to come, history books will likely look back on September 2016 as a major milestone for the worlds climate. At a time when atmospheric carbon dioxide is usually at its minimum, the monthly value failed to drop below 400 parts per million.
"Earth's CO2 Passes the 400 PPM Threshold - Maybe Permanently" is from scientificamerican.com, published on September 27, 2016.

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