Chicken hatcheries often grind up male chicks as soon as they break out of their shells -- they don't produce enough meat as adults, so they're considered useless compared to the egg-laying females. It's not exactly compassionate, and it wastes money as hatcheries incubate eggs they'll never use. However, technology might just have a way to prevent such a horrifying fate. Vital Farms and Novatrans are partnering on TeraEgg, a technology that uses terahertz spectroscopy to identify the sex of a chicken well before it hatches. The technique traps and analyzes the gas emanating from the pores of eggs, identifying the sex (or infertility) within seconds. You can use it as soon as 2 days after the hen lays her eggs, or early enough that you can sell the male eggs as food.