LifeEvolution's X factor: Shuffling up new species Darwin described the creation of new species as the "mystery of mysteries". Could the solution be found in a single gene, asks Bob HolmesFeatures
LifeBug to spider: I will control your offspring's sex Famed for ruthless reproductive strategies, female spiders are in fact mere puppets in the hands of a parasitic bug that kills off their embryonic sons 51¶¯Âþ