ESPN's weekly PPR and IDP fantasy football rankings are an aggregate of our rankers (eight PPR, three IDP). They are Matt Bowen, Mike Clay, Tristan H. Cockcroft, Daniel Dopp, Eric Karabell ...

Unlike conventional jet engines, a Ramjet or Turbo Ramjet is designed for supersonic and hypersonic ... with some labeling the project a “Russian fantasy.” For now, the MiG-41 remains an ambitious ...