Comments by "Old Scientist" (@OldScientist) on "Can trees stop climate change? | DW Documentary" video.

  1. *The Earth has greened by 15% or more in a human lifetime. "The greening of the planet over the last two decades represents an increase in leaf area on plants and trees equivalent to the area covered by all the Amazon rainforests. There are now more than two million square miles of extra green leaf area per year"(NASA, 2019). Observations of Earth’s vegetative cover since the year 2000 by NASA’s Terra satellite show a 10% increase in vegetation in the first 20 years of the century. Global tree canopy cover increased by 2.24 million square kilometers (865,000 square miles) between 1982 and 2016 (Nature, 2018). As well as human intervention, the reasons for this include forests expanding polewards aided by additional CO2 and a slight rise in temperature.
    2