Org mode offers an easy and convenient way to keep notes and TODO lists in Emacs. A number of apps for mobile devices allows keeping such lists on the go, but keeping them synchronized with your computer can be tedious both to setup and to run. I here present a different strategy, where synchronization is driven from the Linux computer instead of from the mobile device.
For many years, Disqus has been the gold standard commenting system for web sites, thanks to its ease of use and integration with many social networks. Its temptations have been especially hard to resist for web sites using static content generators, a growing trend with many appealing advantages. But it's a solution with several problems, both for the owner of a site and its visitors.
This is a collection of rock materials for the Cycles engine in Blender. I have tried to reproduce the look of a variety of real rock types. They are quite detailed and are best used at close-up range.
If you've used any graphics program that specializes in landscape generation, such as Terragen, you have probably seen that a core feature is the ability to automatically calculate the borders between snow, barren stone and grass from the geometry. Snow is only possible above a certain altitude where the temperature is below the freezing point, and even there snow will not stick on surfaces that slope too steeply. Similarly, grass will only be found below a certain altitude where it's warm enough, and will also not grow on too steeply sloping ground.