Climate change warning: Greenland once melted and raised the ocean 5 feet.

A teacher in British Columbia who had exchanged hundreds of “increasingly personal and intimate messages” with a student has been banned from the job for 15 years. Between the two, more than 1,000 calls were made over the phone, according to a summary of the consent resolution agreement published Tuesday. The secondary school teacher and the student — who have not been identified in the document released by the B.C. Commissioner for Teacher Regulation — started using the school’s Microsoft Teams messaging platform to speak to each other. There were more than 190 messages sent over a...