EnvironmentIn the city, anyone can be a naturalist-explorer By opening their eyes and hearts to the many distinctive – but overlooked – urban habitats, city dwellers can reconnect with nature, says Menno SchilthuizenComment
SpaceThese interstellar spaceship designs are wildly impractical Scientists’ ideas for travelling to the stars range from the the wholly improbable to the hugely expensive and very difficult, says Ed Regis Comment