LifeBeautifully preserved feathers belonged to tiny flying dinosaurs Detailed amber fossils of wings from dinosaurs just 3.5 centimetres long suggest they flew like today’s birds. Such finds let us probe how flight evolved ¿ìè¶ÌÊÓÆµ
TechnologyCarbon nanotubes too weak to get a space elevator off the ground Simulations show that just a single out-of-place atom is enough to ruin the famed strength of carbon nanotubes, so using them to build a space elevator seems unlikely ¿ìè¶ÌÊÓÆµ