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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Mr. Peebles from Pekin, Illinois, USA was claimed as the world's smallest cat. Mr. Peebles is two years old cat weighing just three pounds and measuring 6.1 inches in height. This anomaly is caused by a genetic disorder.

Also known as frozen smoke, Aerogel is the world's lowest density solid, clocking in at 96% air. It is basically just a gel made from silicon, except all the liquid has been taken out and replaced with gas instead. If you hold a small piece in your hand, it is practically impossible to either see or feel, but if you poke it, it is like styrofoam.

Aerogel is also quite useful. It supports up to 4,000 times its own weight and can apparently withstand a direct blast from two pounds of dynamite. It is also the best insulator in existence, which is why we do not have Aerogel jackets: it works so well that people were complaining about overheating on Mount Everest. ...

The very first bionic hand that allows the amputee to actually feel what the hand is touching will be transplanted later this year.

According to doctors involved in the surgery the hand will be attached directly to the patient’s nervous system via electrodes clipped onto two of the arm’s main nerves. This will allow the patient to control the hand directly with his thoughts, and receive sensory signals to his brain from the bionic hand.

This will be a major breakthrough in prosthetics and could open the door to a new generation of artificial limbs with sensory perception. ...

The third largest asteroid to ever hit earth has been found in South Australia. According to scientists involved, the asteroid, which measured up to 20 km across, hit Earth approximately 360 million years ago. This was around the time of the Late Devonian mass extinction, strengthening the idea that asteroid impacts have been associated with many mass extinctions throughout the history of life on Earth.

This is a frilled shark. Frilled sharks are found throughout deep waters in the Atlantic and Pacific oceans. It is often described as a living fossil because of its resemblance to extinct, Paleozoic sharks. They are rarely seen alive because of their preference for deep water.

I'm not sure whether it's his voice or whether it is the meaning behind the script, nevertheless this is awesome.

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.