937,440 articles


SUNDAY 16. SEPTEMBER 2007


Gene determines whether male body odor smells pleasant

To many, urine smells like urine and vanilla smells like vanilla. But androstenone, a derivative of testosterone that is a potent ingredient in male body odor, can smell like either - depending on your genes. While many people perceive a foul odor from androstenone, usually that of stale urine or strong sweat, others find the scent sweet and pleasant. Still others cannot smell it at all.

Good earth: Chemists show origin of soil-scented geosmin

Brown University chemists have found the origins of an odor - the sweet smell of fresh dirt. In Nature Chemical Biology, the Brown team shows that the protein that makes geosmin - source of the good earth scent - has two similar but distinct halves, each playing a critical role in making this organic compound.

How The Discovery Of Geologic Time Changed Our View Of The World

In 1911 the discovery that the world was billions of years old changed our view of the world forever. Imagine trying to understand history without any dates. You know, for example, that the First World War came before the Second World War, but how long before? Was it tens, hundreds or even thousands of years before? Before radiometric dating there was no way of knowing.