Nickolas Zouros (2nd L), President of the Global Geoparks Network and Director of the Natural History Museum of Lesvos Petrified Forest, speaks to workers during restoration work in the Petrified Forest near Sigri village, Lesvos island, Greece on Oct. 20, 2018. The entire Lesvos island in the northeastern Aegean Sea has been designated as one of the 140 UNESCO Global Geoparks worldwide on account of its outstanding geological, cultural and ecological heritage and efforts to preserve and promote it over the past three decades. (Xinhua/Marios Lolos)