The blue marble by night

Something interesting i chanced upon whilst surfing online. This is what the Earth looks like at night (click on the photo to view a larger photo). Man-made lights highlight the populated areas of the Earth's surface.

What's interesting is if you have a look at Korea, you can see the sprawling lights of neighbouring China, Japan, and South Korea. But have a close look at North Korea, and all that's there is a vast space of empty darkness. That's what years of sanctions imposed on North Korea have done. Here's a clearer picture.