A ghost heart is obtained by washing away all donor cells until you're left with a protein scaffold. This ghost heart is ready to be injected with a transplant recipient's stem cells so a new heart - one that won't be rejected - can be grown.

The ancient and mysterious 'Easter Island Heads' were carved from rock between A.D 1100 and 1500 by ancient Polynesians. Their traditional name is 'moai' but most people know them as the giant heads which is why it is often shocking when it's discovered they have bodies. "The reason people think they are [only] heads is there are about 150 statues buried up to the shoulders on the slope of a volcano, and these are the most famous, most beautiful and most photographed of all the Easter Island statues," Van Tilburg, who is also a fellow at the Cotsen Institute of Archaeology at the University of California, Los Angeles, told Life's Little Mysteries. 

These fluffy little creatures are baby flamingos, which may confusing to some as they are lacking their infamous pink color. Babies of this species are fed a bright red milk made from their parents' upper digestive tracts. As they grow up, they begin to develop their characteristic pink feathers. Adult flamingos feed on red and blue-green algae, which is filled with beta carotene, an organic chemical with a reddish-orange pigment. The digestive track system of flamingos extracts the pigment and it eventually dissolves into fats. These fats are deposited into new feathers for a full-on pretty in pink transformation.

In 1925 two medical students in Kirksville, Missouri were challenged to dissect a cadaver's nervous system, starting from the brain downward, but leaving the entire system in one piece. The process took the students - M.A. Schalck and L.P. Ramsdell-over 1,500 hours. Their "blood, sweat and tears" produced this extraordinary display, located at the  Museum of Osteopathic Medicine at A.T. Still University (ATSU) in Kirksville. There are only 4 of these in the world.

Salt crystals are cubic, but some grains when observed appear to be made up of overlapping cubes. This ionic compound is made up of sodium and chloride atoms. When a number of these molecules join to form a crystal they will often arrange themselves in a cubic pattern.

Ice crystal precipitation vary in shapes, intensity and size, but are found in cold regions around the world. "In the absence of supercooled liquid water, the growth of ice crystals to precipitation size is most likely dominated by aggregation of smaller ice crystals, which depends on the ice crystal number concentration and temperature (Hobbs et al. 1974) ," as you can see in the image below.

Aurora's are breathtaking cosmic light displays that can be seen from various planets in our solar system. An aurora is the finale to a process that begins with the sun. The sun emits a constant stream of charged particles or solar wind into the solar system. When these winds reach a planet they interact with the magnetic field that surrounds it, and compresses the field into a teardrop shape. The way in which the magnetic field change cause the charged particles to accelerate into the upper atmosphere, colliding with molecules such as nitrogen and oxygen which gives off energy in the form of light. A light ribbon of color is displayed across the sky in an aurora.