成人快手

Is Tiktaalik, a fossil animal discovered in the Canadian Arctic, the missing link between fish and tetrapod amphibians? The Wollemi pine was thought to have been extinct for two million years but when some were discovered in Australia, the species was safe-guarded through commercial propagation. A needle made from a carbon nanotube could be able to deliver drug treatments with great accuracy. How Japanese wasabi spice delivers its kick through a pain receptor. The astronomers who become "solar eclipse tourists" in Lybia.