Some very slick cover designs by ibworlds.
Here are some cover designs I recently put together for a series of policy journals, done in Blender. I chose a clean, more NPR-style to illustrate the subject of the different policy pieces. There are six in all, which you can see here.
Below is the cover for Energy and Environment, showing the challenge of rising water levels brought about by global climate change and the progress of green technologies we can use to combat those changes.