Britt Hertz takes on a girls vs. boys gymnastics challenge with the Ninja Kidz, blending strength, agility, and competition. 'Massive' untapped oil and gas reserves discovered beneath the Permian.

KOCHVILLE TWP, MI — There’s a gymnastics center in Saginaw County offering gymnastics classes for kids of all ages, cheerleading, summer camps and “ninja” classes inspired by a TV show. “It’s like ...