You can find a variety of information about Amy Sutherland's work and life at her official site. There is also a page for her at the Penguin Books web site.
The Mayo Clinic says that a healthy marriage can lead to a healthier life.
Amy Sutherland's essay is essentially about positive reinforcement. If you're not sure about what that is, you can take this online tutorial on the concept of positive reinforcement. This site has tips for using positive reinforcement in family life.
You may not have the opportunity to use positive reinforcement while training a whale, but you can also use it on more common pets.
