Harvard astronomer’s “alien spherules” are industrial pollutants

Perhaps the biggest question in all of the cosmos is that of life beyond Earth. With so many stars and planets, and with the raw ingredients for life found strewn all about the Universe, there are enormous numbers of proverbial lottery tickets out there: chances for life to arise, survive, persist, and thrive. But humanity still awaits the discovery of our first instance of life beyond Earth, whether it be primitive life on worlds far beyond our own, complex life on a world where biological activity has occurred for billions of years, or intelligent, technologically advanced life that we might someday contact and communicate with. That lack of success, so far, should in no way dissuade us from continuing the search for life elsewhere in the Universe. However, we have to be extremely wary of those who claim to see evidence for the existence of aliens where none exists. Recently,  <a href="https://medium.com/starts-with-a-bang/harvard-astronomers-alien-spherules-are-industrial-pollutants-1510a8282001">Website</a>