Cold weather can create some wild fluid dynamics, so pay attention to your local rivers and waterfalls during the next cold snap. The video above comes from North Dakota where a combination of cold dense air and a stable river eddy created a spinning ice disk, roughly 16 meters in diameter. The disk forms as a collection of ice chunks—not one solid, spinning piece—because the ice formed gradually. As ice pieces form, they get caught in the river eddy and begin to spin as part of the disk, rather like dust and ice do in the rings of Saturn. Such formations are rare but not unheard of; here’s a video showing a similar disk as it grows. (Video credit: G. Loegering; via Yahoo and io9; submitted by Simon H and John C)
Evaporites Nature being artistic. What you see on these fences are the result of water evaporating on the surface and, during slower evaporation periods, the dissolved minerals were deposited in rings. Via reddit 12
The work of Ottawa-based artist Sarah Hatton is a strong political piece, specifically raising awareness of the Colony Collapse Disorder (CCD) happening to honey populations worldwide. Early this year in Chelsea, Quebec, two whole hives fill of bees died from frostbite. The artist jumped at the chance to not let these bee deaths be in vain. Using thousands, yes thousands, of the dead bees, the artist creates geometric patterns, at times almost crop circle-esque, to display the enormity of the issue of CCD.