One of my favorite quick sandwich spots in Denver is Torta Grill, at 1818 East Colfax Avenue. It’s a small shop that you might pass by without noticing, but that tiny kitchen turns out really good ...

In a university lab near Guadalajara, Mexico, researchers trim cactus leaves and feed them into a juicer, creating a bright green liquid. When it’s mixed with other natural materials and processed, it ...