Erupting volcano - Most of the geodes that we find today were actually created when ancient Volcanoes erupted! As the lava cooled, air bubbles became trapped inside creating empty pockets. Over millions of years these pockets filled with the minerals
This iconic image of the polar bear balancing on the small remainder of sea ice is used to portray global warming. Instead of using statistics, this image tries to appeal to an emotional connection to the "cuddly and loving" polar bear.
Lava fountain frozen during eruption. The rarest lava on Earth, has some unusual properties. Unlike most lavas, this is a carbonate rather than a silicate, and erupts from Oldoinyo Lengai, a volcano in Tanzania.