This is an example of a lenticular cloud, also known as altocumulus standing lenticularis. These are stationary, lens-shaped clouds that are formed at high altitudes. They are included in the middle layer cloud family because the bases of the clouds are stationed between about 2,000 and 7,000 meters. These clouds form when moist air is forced to flow up around mountains and large hills. The water is super cooled and condensed from air below the dew point temperature.

At first, it just looks like a worm. But when you peek closer, it slithers like a snake. It sticks its tongue out like a snake. It creeps you out like a snake.

Discovered under a rock in 2006 in Barbados, this thread snake is as thin as spaghetti and smaller than any of the 3,100 other known snake species. Researchers believe it is the smallest a snake can evolve to be.

This is a famous optical illusion, known as the '13 hidden faces'. It is also an attractive piece of art. How many can you find? It is considered that if you can find 10 faces you have normal powers of observation. If you find 15, you have above average observation skills, if you discover 21 or more, you have extremely keen observation skills. The faces that are most obvious are the ones in the foreground, along the path. They are lit up and our eyes are drawn naturally to them. The faces in shadow are perhaps more tricky to observe.

Let me know if you find more, here are my solutions

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This is a remote forest in Western Poland, where 400 pine trees have grown with a curvature in their trunk structure and it turns out that no one really knows exactly what caused it. There are, however, a few theories:

1) The main theory seems to suggest that this is the result of human interference. It is believed that this is a tree farm and the trees were forced to grow horizontally in their youth to make a carpenters life easier. The curved shape can be induced by laying a heavy object over a young tree stem. Phototropism will cause the stem beyond the heavy object to grow toward the sky, while the growing stem beneath and behind the heavy object will develop what is called morphogenetic compression wood - which ultimately makes the curv ...

Gastric brooding frogs went extinct thirty years ago - but today, scientists announced that they have taken a massive step forward in bringing this extinct creature back to life. A team of Australian scientists succeeded in cloning one of these frogs and taking it to the stage of an embryo, and they have now announced that they plan to go all the way and resurrect the gastric brooding frog using cloning technology.

Researchers working to bring back animals like the passenger pigeon and woolly mammoth discuss the implications of their work.

What are your thoughts on the matter?

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18% to 35% of people are "sun sneezers" who have genetically inherited the photic sneeze reflex. The photic sneeze reflex (also known as photoptarmosis) is a condition of uncontrollable sneezing in response to numerous stimuli, such as looking at bright lights or periocular (surrounding the eyeball) injection. Unfortunately, its exact mechanism of action and evolutionary purpose is not well understood. ...

Slot canyons are much deeper than they are wide, and are most commonly sandstone or limestone.

This is Antelope Canyon, located in Northern Arizona. There is enough room to move around comfortably at the bottom, but the opening on top is only 2-3 feet wide.