Top Pro & Con Arguments


Global warming and cooling are primarily caused by fluctuations in the sun’s heat (solar forcing), not by human activity.

According to a study published in the Journal of Atmospheric and Solar-Terrestrial Physics, 50-70% of warming throughout the 20th century could be associated with an increased amount of solar activity. [71] Between 1900 and 2000 solar irradiance increased 0.19%, and correlated with the rise in US surface temperatures over the 20th century. [114]

A study published in Energy & Environment wrote, “variations in solar activity and not the burning of fossil fuels are the direct cause of the observed multiyear variations in climatic responses.” [69] In a study by Willie Soon, PhD, Physicist at the Harvard-Smithsonian Center for Astrophysics, a strong correlation between solar radiation and temperatures in the Arctic over the past 130 years was identified. [70]

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