Lava flow from the Monti Calcarazzi fissure that threatened Nicolosi on the south flank of Mt. Etna, Sicily, Italy, EuropeThe Piano del Lago cone (above) destroyed the Sapienza cable car.

Fire extinction, firefighting aircraft Canadair CL 415, French Sécurité Civile, dropping seawater, large-scale forest fire in Castellar, Maritime Alps

Fire extinction, firefighting aircraft Dash 8 Q400 MR, French Sécurité Civile, dropping extinguishing agent, large-scale forest fire in Castellar, Maritime Alps, Provence-Alpes-Côte d'Azur, France, Europe

Fire extinction with firefighting aircraft Dash 8 Q400 MR, French Sécurité Civile, large-scale forest fire in Castellar, Maritime Alps, Provence-Alpes-Côte d'Azur, France, Europe

Fire extinction, firefighting aircraft Canadair CL 415, French Sécurité Civile, dropping seawater, large-scale forest fire in Castellar, Maritime Alps

Fire extinction, firefighting aircraft Dash 8 Q400 MR, French Sécurité Civile, dropping seawater, large-scale forest fire in Castellar, Maritime Alps, Provence-Alpes-Côte d'Azur, France, Europe

Darvaza Gas crater, Turkmenistan, Central Asia

Darvaza Gas crater, Turkmenistan, Central Asia

Night eruption of Etna volcano seen from Zafferana Etnea village, Etna National Park, UNESCO, World Heritage Site, Sicily, Italy, Europe

Firefighters conducting a hazard mitigation burn near Mount Tamborine, Queensland, Australia.

Firefighters remove a tree that is candling near the containment line of a grass fire, Pimpama, Queensland, Australia

An Australian volunteer firefighter patrolling at first light, Guanaba, Queensland, Australia

Firefighter using a backpack to extinguish hot spots near the containment line, Guanaba, Queensland, Australia.

Firefighters waiting for approval from Incident Control to put fire on the ground, Guanaba, Queensland, Australia

Bush fire near Birnam, Queensland, Australia

View of two firefighters during forest fire, Guanaba, Queensland, Australia