In the battle of the best graphics cards, AMD and Nvidia are the biggest names in the arena, by far. Locking horns in the biggest face-off since Nicolas Cage and John Travolta danced around slo-mo ...

Arteries carry oxygenated blood away from your heart. They have thick walls and a muscular layer that keeps your blood moving. Arteries can be as wide as a nickel (about two centimeters). They are the ...