but not all tanks perform effectively. This article highlights five of the worst tanks ever made due to various shortcomings. The main battle tank may be an old concept, but armored vehicles are ...

BedRyder chief marketer George Conway asked the Sharks for $200,000 in exchange for 15% equity in his company, which makes safety seats for the backs of pickup trucks. To Conway's credit, he's a ...

Cuban hated the Rolodoc presentation so much that he actually got up and shook the hands of the cofounders, brothers Richard and Albert Amini, just to tell them they gave the worst "Shark Tank ...

But one deal stands out as his worst investment ... The pitch was so convincing that it made history on Shark Tank, bringing all five Sharks – Cuban, Kevin O'Leary, Daymond John, Lori Greiner ...