Inside actors brains, inactive ingredients aren't, Super solar storms, butterfly's toxic backup, secrets life of bone and wind turbines and climate.

Quirks and Quarks

Actors' brains have different activity patterns when they're in character; Inactive ingredients in your meds might not be so inactive after all; Super-powerful solar storms hit Earth in the past - and could recur in the future; When a butterfly's disguise fails, its backup plan is poison; 'Skeleton Keys' - a new book explores the secret life of bones; Do wind turbine farms have an effect on climate?

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