Better interior design might keep astronauts healthier and happier in deep space

When it comes to building the interior of a spacecraft, engineers often prioritize function over aesthetics, focusing on materials and hardware that are both safe and effective for executing the vehicle's intended mission. But some scientists say it's time to consider another crucial factor when designing a spacecraft's insides: how it will affect the behavior of the passengers? For astronauts traveling vast distances -- perhaps on a trip to Mars -- the design of a spacecraft's interior could be...