�y��vlog

The finalists included a U.S. company that found a way to recycle polycotton fabrics, which makes up half of all textile waste.

Sophia had a sweet old lady style that belied the sharp Sicilian woman that lurked beneath her Peter Pan collars and polycotton florals.

“If you strip the outer polycotton layer off a mattress, underneath it’s just a horror,” Scollick agrees.

"For instance, polyester and cotton need different types of dyes and generally different types of machines to dye them. Most apparel out there today is actually polycotton, and if you're not weaving it with pre-dyed thread, it needs to be cross-dyed, which means you're dyeing it twice," says Dr Orr.

"We can dye polycotton, so that already halves the amount of water being processed and the amount of chemicals and CO2 emissions."