Scientific American: “What Climate Change Does to the Human Body”
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Started by metmike - Aug. 30, 2020, 2:27 a.m.
Climate | Opinion

What Climate Change Does to the Human Body

An ENT physician sees the effects in her patients all the time

Hard to know where to begin with this person's ignorance of science.

The slight warming of 1 deg. C over the last century has been mostly beneficial to humans. The last 40 years has featured the best weather/climate for life in the past 1,000 years............because of the additional warmth. 

Cold weather kills far more people than hot weather


Cold-weather accounts for almost all temperature-related deaths
August 18, 2020


metmike: What the heck did people do during the decade of the 1930's............before air conditioning?

This indicator describes trends in unusually hot and cold temperatures across the United States.


  • Line graph showing values of the U.S. Heat Wave Index for each year from 1895 to 2015.
    Download Data  Download Image 
    This figure shows the annual values of the U.S. Heat Wave Index from 1895 to 2015. These data cover the contiguous 48 states. Interpretation: An index value of 0.2 (for example) could mean that 20 percent of the country experienced one heat wave, 10 percent of the country experienced two heat waves, or some other combination of frequency and area resulted in this value.
    Data source: Kunkel, 20166
    Web update: August 2016

By metmike - Aug. 30, 2020, 2:37 a.m.
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This person mentions the Clean Air Act. Air pollution today is a tiny fraction of what it used to be and continuing to fall. 

The Clean Air Act: Successes and Challenges Since 1970

                            Press Release — Jan. 6, 2020


clean air PR.jpg


Overview of the Clean Air Act and Air Pollution


By metmike - Aug. 30, 2020, 2:48 a.m.
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She says that we need to heal the planet from  the  climate crisis............but the climate for the past 40 years has been the best for life in at least 1,000 years, not in spite of the 1 deg. C of warming and increase in CO2 from 300 to 418 parts per million but exactly BECAUSE of it.

Carbon Dioxide Fertilization Greening Earth, Study Finds


From a quarter to half of Earth’s vegetated lands has shown significant greening over the last 35 years largely due to rising levels of atmospheric carbon dioxide, according to a new study published in the journal Nature Climate Change on April 25.

An international team of 32 authors from 24 institutions in eight countries led the effort, which involved using satellite data from NASA’s Moderate Resolution Imaging Spectrometer and the National Oceanic and Atmospheric Administration’s Advanced Very High Resolution Radiometer instruments to help determine the leaf area index, or amount of leaf cover, over the planet’s vegetated regions. The greening represents an increase in leaves on plants and trees equivalent in area to two times the continental United States.

globe of Earth from North Pole perspectiveThis image shows the change in leaf area across the globe from 1982-2015.Credits: Boston University/R. Myneni

Green leaves use energy from sunlight through photosynthesis to chemically combine carbon dioxide drawn in from the air with water and nutrients tapped from the ground to produce sugars, which are the main source of food, fiber and fuel for life on Earth. Studies have shown that increased concentrations of carbon dioxide increase photosynthesis, spurring plant growth.

However, carbon dioxide fertilization isn’t the only cause of increased plant growth—nitrogen, land cover change and climate change by way of global temperature, precipitation and sunlight changes all contribute to the greening effect. To determine the extent of carbon dioxide’s contribution, researchers ran the data for carbon dioxide and each of the other variables in isolation through several computer models that mimic the plant growth observed in the satellite data.

Results showed that carbon dioxide fertilization explains 70 percent of the greening effect, said co-author Ranga Myneni, a professor in the Department of Earth and Environment at Boston University. “The second most important driver is nitrogen, at 9 percent. So we see what an outsized role CO2 plays in this process.”

By metmike - Aug. 30, 2020, 2:55 a.m.
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By all authentic scientific standards, we are having another climate OPTIMUM!

Only in politics is this a crisis/emergency. Only in politics, is the beneficial gas, CO2 called pollution.

"The Holocene Climate Optimum (HCO) was a warm period during roughly the interval 9,000 to 5,000 years BP, with a thermal maximum around 8000 years BP. It has also been known by many other names, such as Altithermal, Climatic Optimum, Holocene Megathermal, Holocene Optimum, Holocene Thermal Maximum, Hypsithermal, and Mid-Holocene Warm Period.

This warm period was followed by a gradual decline until about two millennia ago."

"Out of 140 sites across the western Arctic, there is clear evidence for conditions warmer than now at 120 sites. At 16 sites, where quantitative estimates have been obtained, local HTM temperatures were on average 1.6±0.8 °C higher than now.  Northwestern North America had peak warmth first, from 11,000 to 9,000 years ago, while the Laurentide Ice Sheet still chilled eastern Canada.  Northeastern North America experienced peak warming 4,000 years later. Along the Arctic Coastal Plain in Alaska, there are indications of summer temperatures 2–3 °C warmer than present.[5] Research indicates that the Arctic had less sea ice than the present.[6]"

By metmike - Aug. 30, 2020, 12:23 p.m.
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