Thousands of sequences that control genes are active in the developing human limb and may have driven the evolution of the human hand and foot, a comparative genomics study led by Yale School of Medicine researchers has found.
Opposable thumbs: one of the features that separates us from other apes, a contributor to the tool use that's made us the dominant species on the planet. Makes you feel quite smug, right? Well, not so fast.
The well-known cave paintings at El Castillo in Northern Spain possibly weren't produced by modern humans at all, say scientists, but by Neanderthals.