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Whether a toothy grin, a megawatt beam or a faint curve of the lips, why do we smile?
What is hypochondria, and why don’t we take this misunderstood malaise more seriously?
Does torture actually work, and can its use ever be justified?
Why do some people choose to be frozen at death, hoping to be brought back to life?
The Why Factor asks why some people believe in conspiracy theories and whether it matters
Why do we feel regret – is it right to live with it, or should we get over our mistakes?
In the countries where it’s legal, why do people choose to bear arms?
Why do some people take the law into their own hands?
From shopping lists to to-do lists – why do we make lists and what do they say about us?
Could you forgive the person who killed your child or who raped or tortured you?