1 Fun Thing
Octopi are one of the most intelligent creatures on the planet and apart from having 8 arms and 3 hearts, another interesting fact is their blood is blue because it's copper based, since that's more efficient in cold, low oxygen environments.
3 Coffee Facts
Research by scientist Samo Smrke has shown that blooming coffee at lower temperatures helps retain many of the volatile organic compounds that would have otherwise evaporated. In theory, this should result in a more aroma rich and sweeter cup of coffee.
This is not very common but some conical burr grinders like the Mx Cool Aries and Baratza Sette have a rotating collar burr, while the central cone burr remains fixed. This allows for a shorter grind path by eliminating the need for a central shaft.
When grinding coffee, the process of altering the RPM in a very precise way in order achieve a specific particle size distribution is known as RPM profiling.