Craig Bauer, senior v-p publishing operations and strategic planning at Hachette, will be leaving HBG to become senior v-p of global publishing operations at Macmillan Science and Education, Publishing Trends reports. His last day at HBG will be Friday, January 17. Bauer joins Ken Michaels, who left his post as president and COO of HBG in August to become global chief operating officer for Macmillan Science and Education.