Race the rudder. Raise the sales. Raise the sales. Captain, an unidentified ship approaching. Over.

Roger that. Wait. Is that an enterprise sales solution? Reach sales professionals, not professional sailors. With LinkedIn ads, you can target the right people by industry, job title and more. Start converting your B2B audience into high-quality leads today.

Spent 200 euro on your first campaign and get a free 200-euro credit for the next one.

Go to LinkedIn.com slash XXX to claim your offer.

Terms and conditions apply.

Welcome to Science Talk, the weekly podcast of Scientific American.

For the seven days starting March 28th, I'm Steve Merski.

This week on the podcast, genetics and alcoholism, with psychiatric geneticist Laura

Jean Byroute, and a pioneering mystery, we'll talk with Scientific American editor

George Musser about a session here in New York Monday evening at which scientists discussed what they thought was going on with the pioneer spacecraft, which are now out of the solar system.

From launch to last contact, the positions of the ships were not quite what the equations predicted.

So what's up?

Plus, we'll test your knowledge about some recent science in the news.

First up, Laura Jean

Byruth, she's Associate Professor of Psychiatry at Washington University in St. Louis. With John

Nernberger, she co-authored the article Alcoholism and Our Genes in the April issue of

Scientific American. To find out more, I called Byrude at her office in St. Louis.

Hi, Dr. Byrude. How are you today? Hi, Steve.

First of all, you're a psychiatric geneticist. What exactly does that mean?

I am trained as a psychiatrist, so I have my medical degree and did specialized training in

psychiatric disorders such as alcoholism,

depression, schizophrenia.

...