Following is a transcription of the video. Narrator: This is said to be the world's oldest leather-making tradition. It's called vegetable tanning, and it's a process that has been perfected over ...

In addition to reducing food waste, Hugo and Koen said they also wanted to reduce emissions from the leather-making process. The chemicals used to tan leather can be toxic to both humans and the ...

The 5,300-year-old mummy of Otzi the Ice Man, carried a backpack – and wore a pouch attached to a leather belt – on his journey through what are now called the Tyrolean Alps. Ancient Roman ...