If you're happy and you know it

Sunlight stimulates your brain's pineal gland to produce 'tryptamine' chemicals. When deprived of sunlight people become unhappy due to the suppression of one tryptamine, serotonin.

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In this week's Science & Nature newsletter

** Happiness **
** Junk **
** Swifts on the move**
** TV & Radio choices this week **

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Pendants

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