The Batagaika crater in eastern Siberia is the biggest permafrost crater in the world. According to research published in 2016, the crater wall has been growing by a yearly average of 20-30 meters per year over a ten-year observational period. The local Yukatian people report hearing ominous noises, leading some to call it a portal to the underworld. The depression is in the form of a one-kilometre-long and growing. The land began to sink due to the thawing permafrost in the 1960s after the surrounding forest was cleared. Flooding also contributed to the enlargement of the crater.
info source: wikipedia
NASA Earth Observatory images by Jesse Allen, using Landsat data from the U.S. Geological Survey., Public domain, via Wikimedia Commons
The Nördlinger Ries is a giant impact crater in Southern Germany. An asteroid hit this region 15 million years ago creating a crater with a diameter of 25km. The town is located in the crater depression. The immense pressure and heat created tons of small diamonds Stone from this area was quarried and used to build the stone buildings. Approximately 72,000 tonnes of diamonds are hidden in Nördlinger’s buddings. They are scientifically valuable but economically not of interest.
Aerial scenes at the end of Willy Wonka & the Chocolate Factory were filmed there.
Wolkenkratzer, CC BY-SA 4.0, via Wikimedia Commons
Hd pano, CC BY-SA 3.0 DE, via Wikimedia Commons
A fallstreak hole is a large circular gap, that can appear in clouds. Such holes are formed when the water temperature in the clouds is below freezing but the water has not frozen yet due to the failure of ice nucleation. When ice crystals do form they will set off a chain reaction causing the water droplets around the ice crystals to evaporate leaving a large usually circular or elliptical hole.
H. Raab (User:Vesta), CC BY-SA 3.0, via Wikimedia Commons
Continue reading “Punch hole clouds”
Desert rose is the colloquial name given to rose-like formations of crystal clusters of gypsum or baryte which include sand grains. The ‘petals’ are crystals fanning open in radiating flattened crystal clusters. The rosette crystal habit tends to occur when the crystals form in arid sandy conditions, such as the evaporation of a shallow salt basin. The crystals form a circular array of flat plates, giving the rock a shape similar to a rose blossom.
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0, CC BY-SA 3.0, via Wikimedia Commons
Continue reading “Desert Rose — Rose-like formation of crystal clusters”
Apis dorsata, the giant honey bee, is a honey bee of South and Southeast Asia, found mainly in forested areas. Since their nests are fairly exposed and accessible to predators, built in exposed places far off the ground, these giant honeybees exhibit strong and aggressive defense strategies. A method that Apis dorsata utilizes against wasps is referred to as “shimmering” behavior or defense waving. Bees in the outer layer thrust their abdomens 90° in an upward direction and shake them in a synchronous way. This may be accompanied by stroking of the wings. The signal is transmitted to nearby workers that also adopt the posture, thus creating a visible — and audible — “ripple” effect across the face of the comb, in an almost identical manner to an audience wave at a crowded stadium. These wave-like patterns repel wasps that get too close to the nests of these bees and serve to confuse the wasp. In turn, the wasp cannot fixate on capturing one bee or getting food from the bees’ nest, so the wasp will seek to find easier prey and leave this nest alone.
info source: wikipedia
Muhammad Mahdi Karim FacebookThe making of this document was supported by Wikimedia CH. (Submit your project!)For all the files concerned, please see the category Supported by Wikimedia CH.العربية | বাংলা | čeština | Deutsch | English | Esperanto | español | français | magyar | italiano | македонски | Nederlands | rumantsch | sicilianu | українська | +/− / GFDL 1.2
Incredible examples of art in nature.
Rainforest Expedition’s Troy Alexander spotted the bizarre maypole-in-miniature in the Southern Peruvian Amazon. Alexander posted a photograph of his discovery to /r/whatsthisbug, a subreddit devoted to identifying insects and their handiwork.
Continue reading “Mind Blowing Cocoons in Rainforest”
By GRAHAMUK at the English language Wikipedia, CC BY-SA 3.0, Link
Kelvin-Helmholtz clouds, also known as ‘billow clouds’, look like rolling ocean waves in the sky. The clouds often form on windy days, when two air currents of varying speeds meet in the atmosphere. It’s believed that this kind of clouds inspired the swirls in van Gogh’s ‘Starry Night‘.
Continue reading “Billow clouds look like ocean waves in the sky”
Thermogenic plants have the ability to raise their temperature above that of the surrounding air. They can generate their own heat and flower earlier in the season than almost any other plant. Botanists are not completely sure why thermogenic plants generate large amounts of excess heat, but most suspect the flowers may be doing this to attract coldblooded insect pollinators. Thermogenic plants are found in a variety of families, but Araceae in particular contains many such species. Here’s some examples.
Symplocarpus foetidus, commonly known as skunk cabbage, is a low growing plant that grows in wetlands and moist hill slopes of eastern North America. Bruised leaves present a fragrance reminiscent of skunk.
Skunk-cabbage in snow – Photo via Ryan Johnson/Flickr
Continue reading ““Warm blooded” plants”
By Simon Eugster (talk · contribs) – Self-photographed, CC BY-SA 3.0, Link
In meteorology, a virga is rain falling from a cloud that evaporates before reaching the ground. At high altitudes the precipitation falls mainly as ice crystals before melting and finally evaporating. The phenomenon is very common in deserts, where low humidity and high temperatures can cause rain to evaporate shortly after being released by clouds. You might see virga in the U.S. West and above the Canadian Prairies, in the Middle East, Australia and North Africa.
Continue reading “Virga – rain that doesn’t reach the ground”
“The ground looks like it’s breathing in this Quebec forest,” wrote user Daniel Holland on twitter. According to the Forbes report, air is involved in this illusion, as strong wind plays a role in moving the trees and the topsoil. During a storm the ground becomes saturated with water, loosening the soil’s cohesion. As strong winds move the top of the tree, the force is transferred by the stem, acting as a lever, to the roots and the ground begins to move.
The wind caused the trees to sway, roots and all. In fact, the whole floor seems to rise and fall as if the earth itself was breathing. The phenomenon works best with spruce trees with their almost disc-shaped root system growing in the uppermost layers of the soil.