Will unisex bathrooms on planes soon vanish into thin air? CNN is reporting that Japanese airline All Nippon Airways is introducing women-only lavatories on its international routes starting next week, though they have no plans to designate men-only facilities. The move came after many customers spoke up asking for the separation, but the airline says there are exceptions—such as when a restroom is required for safety reasons or "when there are very few female passengers." A poster at FlyerTalk said, "The lavatories are scarce enough already. The last thing we need is more restriction of choice."