-Russia’s MiG-41, also known as PAK DP, is advertised as a sixth-generation stealth interceptor that will fly at Mach 4 or even Mach 5, patrol near space, shoot down hypersonic missiles, and fire ...

Key Points and Summary - Russia’s proposed MiG-41 (PAK DP) promises Mach-4+ speed, lasers, and near-space flight—but remains artwork, not airframe. Five hurdles loom: first, technologies like airborne ...

Almost by definition, bikes come with compromises. A stiffer bike might mean more responsive, but it’ll cost you comfort. A slacker one is often more fun on descents, but likely a pain climbing uphill ...

Pivot’s newest XC bike is the revamped Mach 4 SL. Gone is the choice between two models (short and long travel), replaced by a single version with adjustable travel between 110mm and 120mm. Rear ...