3 pounds carrots (about 10 medium, to yield 2 cups carrot pulp) 2 tablespoons olive oil — Pinch of salt For the cake 3 cups all-purpose flour 2 teaspoons baking powder 1 teaspoon baking soda 2 ...

David Hepworth and Eric Whale, two Scottish material scientists, were looking for smart ways to reuse food waste when they figured out how to make nanofibers out of carrot pulp, the leftovers from ...