“Always on grass banks away from the water’s edge. They are usually about 10cm (4in) in diameter. We’ve asked experts what it might be, but as yet no one is really sure. Whatever it is, it’s very weird.” (via Strange ‘slime’ baffles workers at nature reserve - Telegraph)

5 Incredible Images, Videos of Bioluminescent Water - TechEBlog

Best I can do is my face on a cloud.

Steve Hornsby from Bournemouth said the 3cm diameter balls came raining down late on Thursday afternoon during a hail storm. He found about a dozen of the balls in his garden. He said: “[They’re] difficult to pick up, I had to get a spoon and flick them into a jam jar.” (via BBC News - Bournemouth resident mystified by ‘blue sphere shower’)

As a result of vital activity of organisms in the lake Gippslend, the water along the coast became an intense bluish glow, incomparable in its beauty to any illuminated pool. (via Bioluminescent lake in Australia (8 Photos) | Crazy pics)

A detailed analysis of the skull’s surface revealed minute rotary scratch marks around the eye sockets, teeth and cranium. This was clear evidence that the skull was cut and polished with a wheeled instrument – and the Aztecs never used the wheel. The researchers concluded that the skulls were cut from a piece of Brazilian rock crystal in Europe. They were then probably sold to collectors as a relic from the ancient Aztec civilization. Many museums now have removed the skulls from display because of their questionable origins. (via 10 Recent Scientifically Solved Mysteries)