Over the 140 years of the new time series, this nitrogen component of river chemistry is seen to climb relentlessly.

BBC: Thames archive reveals long nitrate rise

In addition, there is a spectrograph that will slice light into its component colours so scientists can discern something of the chemistry of far-flung phenomena.

BBC: Science & Environment

Turin identifies the "official birthday of fragrance chemistry" as the discovery of the synthetic simulation of coumarin, an essential component of the tonka bean, prized for its sweet, nutty and smoky fragrance, in 1868.

FORBES: Perfumes Are Back To The Future