When the launch of the James Webb Space Telescope comes a few years from now, we will have then opportunity to probe deeper into the cosmos than ever before, to see things we had only dreamed of seeing previously.  Among the prime targets for this modern marvel of human ingenuity are potentially habitable exoplanets, where future humans could live, provided there isn’t already life occupying the real estate.  To help astronomers assign importance to the growing number of exoplanets, researchers at the University of Washington’s Virtual Planetary Laboratory have devised an index to represent the habitability of worlds, near and...