A 3,400-year-old mechanical dog from ancient Egypt moves, barks, and showcases astonishing ancient engineering.

We're here above Glen Canyon, which actually has been incised only in the last 250,000 ... grinding against the edge and carving this out over time, and driving that erosion by a abrasion process.

And if we turn this figure upside down here, you'll notice you can see the hand chisel lines where they actually did the carving ... are really beautifully incised. And this beaded edge, one ...

Trump has ruled out security guarantees for Ukraine, halted military aid and is pushing Zelensky to give up Ukrainian mineral rights and accept a ceasefire at all costs. Above all, he has made it ...