<p><img src="https://images.cointelegraph.com/images/840_aHR0cHM6Ly9zMy5jb2ludGVsZWdyYXBoLmNvbS91cGxvYWRzLzIwMjItMDkvNjhiMTJlNTItMjA2OC00ZTJhLTkyYjctZmRmMjhmNTJhNWNlLmpwZw==.jpg"></p><p>Bitcoin mining raises a “set of red flags for any consideration as a sustainable sector,” according to researchers. </p>