In 2004, Carlo got married to Timothy Law Snyder. Timothy Law Snyder is an educator and well known mathematician. She met him for the first time when she interviewed him.
Carlo received her formal education from Minerva High School. With the completion of her high school graduation, she joined Kent State University. She received her Bachelor of Arts in journalism from there. She began her broadcasting career from Akron. There she received an award for police and court reporter. After that she joined WSYX and WBNS 10-TV. She was also honored with Emmy award for her work as an anchor and reporter. In 1992, she joined WBAL-TV as a news presenter. She has been working at CNN since 2001. She began serving them as an anchor of CNN Headline News and Good Morning Washington. Her net worth is said to be around $3 Million Dollars.