Latest Issue 29 Apr 2016 Latest Issue 29 Apr 2016 Tesla coils are a staple of museums, but on a smaller, more focused scale, they can drive self-assembly of carbon nanotubes.Arthur S. Aubry / Getty Images NewsPhysical Sciences Carbon nanotube 'wires' self-assemble in electric field Introducing Teslaphoresis to remotely make nanotube circuits. by Belinda Smith News Technology Bright idea: fireflies inspire better OLEDs by Belinda Smith Bio-inspired prototype 61% brighter for the same energy. News Life Sciences Bed bugs prefer red and black home interiors by Amy Middleton But don't throw out your bedsheets just yet. News Space Powerful winds stream from unusual binary systems by Bill Condie Scientists edge closer to understanding mysterious ultra-luminous X-ray sources. News Life Sciences Brain map sheds light on how we process language by Amy Middleton The rich patterns of the semantic system. Feature Space Lasers, a Martian vista and penguins by Robyn Adderly Five of the best images of the week.