LifeAncient animal's fossilised brain prompts rethink of spider evolution A 500-million-year-old sea creature called Mollisonia shared a similar brain structure to modern spiders, suggesting that arachnids first evolved in the sea News
LifeFlatworm caught hunting and killing spider on its own web Flatworms are slow-moving predators with poor vision, but one of them managed to attack a spider as it guarded its egg sac News