...Is the U.S. about to come into a windfall? We spoke to Laura Lewis, a university distinguished professor of chemical and mechanical engineering at Northeastern, who studies critical minerals and their applications. Her comments have been edited for brevity and clarity... ...What about rare earths? Does Ukraine have them? The evidence for Ukraine having rare earths at all is derived from reports that are at least 50 years old that were conducted by Russia. There really is no significant evidence that Ukraine has them. If they do, and they say that they're going to now develop this resource, it would...