We are entering a Grand Solar Minimum. Sun radiates less heat. Sun blocks fewer cosmic rays (nuclear particles) due to a reduced solar magnetosphere allowing more particles to strike the earth causing more volcanoes and earthquakes.
Earth's magnetosphere is also reduced allowing Jet Stream to wander causing floods like in the Midwest and droughts in other regions. Both reduce crop production.
I'll go back to the presentation: I ignorantly thought it was talking about something else altogether. (And I generally like reading information much more than watching it.)
During the Maunder Minimum the sun radiated less heat. Wheat prices rose 400% in the UK.
But Dr Valentina Zarkhova has noticed that more significant than the slight global cooling is the reduction of the sun's magnetosphere. This allows more cosmic rays (nuclear particles from distant decaying stars) to strike the earth. The New Madrid fault had a major quake during the Maunder Minimum on 12-25-1699. During the Dalton Minimum, the New Madrid fault had 4 quakes on 3 days in 1811-1812.
Japanese scientists also noted an increase in the number of volcanoes during a Grand Solar Minimum. The likely cause of the increase in both quakes and volcanoes is the increased number of cosmic rays energizing the earth.
We are entering the Eddy Grand Solar Minimum in 2019. Winter 2019-2020 will be harsh. The first of many to come. Also expect the reduced earth magnetopshere to let the Jet Stream to wander about causing wild changes in weather patterns.