Niall Benvie / Close-up of Slate in quarry, Radnor Lake, Pensylvania, USA

Doug Wechsler / Autumn fall leaves of American beech tree {Fagus grandifolia} PA, USA.

Doug Wechsler / Red spotted newt, red eft stage {Notophthalmus viridescens} PA, USA.

Doug Wechsler / Firefly in flight {Lampyridae} Pensylvania, USA

Doug Wechsler / Slimy salamander {Plethodon glutinosus} Pensylvania, USA

Niall Benvie / American toad {Bufo americanus} Pensylvania, USA

Doug Wechsler / Poison ivy {Rhus radicans} and Boston ivy on tree trunk Pensylvania, USA