Dark matter makes up most of the universe, yet we have very little understanding of it. Scientists recently released a map that gives the clearest picture yet of what dark matter looks like.

A growing body of research on dinosaurs' closest living relatives suggests the method that's been used to estimate how old a dinosaur was when it died may be leading paleontologists astray.

Candidate Laura Fernández won a resounding victory, promising to continue the aggressive reorienting of the Central American nation's politics started by her predecessor.