New Delhi, Oct. 20 -- Houston billionaires Nancy and Rich Kinder say they are giving away most of their money - about $10 billion - to help the city that made them who they are.

In an interview with ABC13 Houston's Melanie Lawson, the couple confirmed that they have pledged to donate 95% of their fortune to local causes - parks, education, and arts among their main priorities.

The Kinders spoke after breaking ground on an $18.5 million expansion of Emancipation Park in Houston's Third Ward. Their Kinder Foundation provided the lead funding for the project, which will add a new outdoor performance stage and a renovated cultural center.

"We've been very fortunate," Rich Kinder said during the interview. "Whatever wealth you accumulate is...