"Sensible couples should sit down and talk about it in the same way that they talk about whether they want to have children," said McNeil, who is married to a physicist herself. "It's equally critical to their lives."
For physicists who have fallen for the charms of one another, finding two permanent physics jobs in the same place is one of the toughest challenges they face. Valerie Jamieson asks couples how they cracked the two-body problem.