On May 10, 2013, the New York Times reported [1] that for the first time in several million years, the CO2 level in the Earth's atmosphere passed 400 ppm (parts per million). Consequently, extreme ...
I am a retired plant scientist. Over the years I have commented on the essential role that CO2 plays in photosynthesis, the basis of virtually all life on Earth. In the last two years I have ...
On May 10, 2013, the New York Times reported that for the first time in several million years, the CO2 level in the Earth's atmosphere passed 400 ppm (parts per million). Consequently, extreme heat ...
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