The border between China and Kazakhstan is a colourful illustration of the countries' agriculture practices. The green land in China is a striking contrast to Kazakhstan's arid landscape in the west.

He’s spent time on both sides, tagging along with Border Patrol agents and migrants. Through his photos, you can see how the fencing varies greatly on different parts of the border. Out west ...

False-color Landsat satellite images showcase ... boundaries between countries can shift. In 2006, Italy and Austria signed an agreement allowing their shared border to be redrawn in response ...