They lived about 30 million years apart and never set foot on the same continent. Yet Giganotosaurus carolinii is always ...
How and when did dinosaurs first emerge and spread across the planet more than 200 million years ago? That question has for ...
Two-dimensional materials are substances with a thickness of a few nanometres or less. Electrons in these materials are free to move in the two-dimensional plane, but their restricted motion in ...