numberwang on 14 January 2018
It seems that after 400 years we might be entering a new phase of diminished solar activity, potentially a repetition of the Maunder Minimum from the 17. century or at least the Dalton Minimum. The Modern Maximum that lasted until about 2015 is now beyond us.
Tag for the next decades.
Overview: https://en.wikipedia.org/wiki/Solar_cycle
The Maunder Minimum came with the Little Ice Age in the 17. century and sunspot activity is weakly correlated with volcanic activity on earth: https://pubs.giss.nasa.gov/abs/st07500u.html
