Sustainable tourism expert Dr. David Perkins shares what to consider before signing up for one.

Do you travel often enough to make a travel rewards credit card like the Chase Sapphire Preferred worth it? What can you expect with initial rewards bonuses?

These are the types of questions Dr. David Perkins, associate professor and sustainability programs director in the School of Earth, Environment and Sustainability at Missouri State University, answers in a recent WalletHub article.