fact, there are now six different companies pursuing exactly this goal, with everything from cultured salmon to lab-grown shrimp heading for our menus. Agricultural Reinvention: Plants and animals need room to roam, enormous stretches of pristine, uninterrupted habitat, both terrestrial and aquatic. Right now, 15 percent of the Earth is protected wildlands. To stave off what’s now known as “the Sixth Great Extinction,” Harvard’s E. O. Wilson and other experts believe that half the planet might be required. Which raises a critical
