In AMT387 questioneers want to know how pregnancy tests work, how many nipples bears have, why there are salmon vending machines in Singapore, and how to deal with old friends who don't know you have amnesia. Find out more about this episode at . Send us questions for future episodes: email written words or voice recordings to [email protected]. Tweet us  Facebook Our new album Home Entertainment is available now for £paywhatyouwant for a limited period at , where you can also obtain our other special albums, AMT episodes 1-200, and our Best Of compilations. Hear our other work: Helen Zaltzman's podcasts The Allusionist at and Veronica Mars Investigations at ; Olly Mann's five podcasts including , The Week Unwrapped, and The Media Podcast at ; and Martin Austwick's music at and his Tom Waits podcast Song By Song at . This episode is sponsored by: The Great Courses Plus, the streaming library of courses on topics from wine to mystery fiction to yoga to formal logic to dog training. AMT listeners get a free month at . Squarespace. Want to build a website? Go to , and get a 10% discount on your first purchase of a website or domain with the code 'ANSWER'.