"Danish physicist and Nobel Prize winner Niels Bohr lived a busy life: When he wasn’t re-imagining atomic structure and quantum mechanics, he was saving over 7,000 Danish Jews from Nazi persecution. In 1943, after learning that Nazi occupiers sought to prevent him from working on the Allied Manhattan Project, Bohr evacuated to Sweden, whose government was under strict Allied orders to fly him to the United States immediately."

http://thejewniverse.com/2013/neils-bohr-the-righteous-physicist/