It's spring! Behold your anti-hibernation guide: 13 ideas for embracing the thrill of a new season / Bear wakes from hibernation 'happy and healthy' after pioneering brain op / New study offers insight into hummingbirds' hibernation-like rest / 'Metabolic knife edge': Study offers insight into hummingbirds' hibernation-like rest / Tom Gauld on hibernation - cartoon / Could hibernation technology allow humans to skip winters? / Hedgehogs' hibernation patterns show surprising flexibility / New technology illustrates bacterial 'hibernation states' / Is the physics of red blood cells in bats a key to 'artificial hibernation' for humans? / Syrian hamsters reveal genetic secret to hibernation