New York Times Social Q’s columnist Philip Galanes takes your calls and questions about pet etiquette and how to gracefully handle sticky situations with Fido and his owner. The director of a documentary about the tragic 1985 standoff between the radical group MOVE and the Philadelphia Police Department. Tash Aw on his latest novel, Five Star Billionaire, set in Shanghai. We’ll find out why despite an international ban, the ivory trade continues, and is targeting young elephants for their valuable tusks. Plus, a look at the science of cloud seeding, and how being able to make it rain could help in the fight against drought and crop failure.