Bright Carrots

Preheat oven to 500 degrees, and put rack near bottom of oven.
Cut carrots into 1/2-inch slices.
Toss carrots and melted butter in a 12-by-2-inch roasting pan. Arrange the slices in the pan so they touch as little as possible. Roast 15 minutes.
For the glaze: In a small bowl, combine juices, sugar, ginger, salt and cumin.
Remove carrots from oven, pour the glaze over, and turn the slices over in the liquid. Roast 10 more minutes. Carrots should be easy to pierce with a sharp knife but still firm.