It’s also the “almost home” signal for astronauts landing in Florida. If so, it would have originally formed when magma pushing up towards the surface of the Earth created a bulge, like a pimple.Įach band of the ring is made of a different type of rock that erodes at a different speed. Scientists are still trying to confirm how it was formed, but they think it’s the eroded remains of a giant dome of the rock. Eye of the Saharaįormally known as the “Richtat structure,” the Eye of the Sahara is in Mauritania. In an ironic twist, huge amounts of rainbow eucalyptus wood pulp are turned into white paper every year. The youngest bark is bright green because it contains chlorophyll (usually found in leaves), then turns the first purple then red then brown as it gets older, loses chlorophyll, and picks up tannins (also found in wine). Its striped look is caused by bark turning colors and peeling away as it ages. Hailing from the Philippines and Indonesia, the rainbow eucalyptus, also known as the rainbow gum, is probably the most colorful tree on Earth. The loud boom and giant hole these bursts create were first reported in 2013. It turns out that if you heat frozen methane trapped in the Siberian permafrost enough, it turns into a gas, eventually building up so much pressure that the ground explodes. Giant permafrost explosionsĪs the climate is changing, new phenomena are developing - none quite so explosively as this one. The switching between wet and dry lets gypsum crystals form between grains of sand, trapping them. It’s a special form of the mineral gypsum that can develop in dry sandy places that occasionally flood.
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