State of the World was previously State of Ukraine. You'll continue to hear Ukraine coverage here, along with other international stories. Support NPR's reporting by subscribing to State of the ...

New clues from the day the dinosaurs died. A mysterious ancient human tooth. Primordial galaxies. See how the past year expanded our knowledge of the cosmos and our own backyard. Yale researchers ...

One of the world’s largest collections of Islamic mosaics covers some 13,000 square feet of the shrine’s interior. The sacred slab is the color of moon rock, its coarse and pitted surface ...

(read more) The commodity of crude oil is by far the world’s most important energy source and the price of oil therefore plays an important role in industrial and economic development.