They strongly selected for areas recently burnt by intense fires, but only in habitats that typically support high abundance of small mammals. (journals.plos.org)
What we know of the connection between solar activity and radiation, coupled with high abundances of isotopes in tree - rings and ice - cores (Fig. 2d), supports the likely case that during the Maunder Minimum solar activity remained for over half a century at very low levels. (gcrio.org)