Will your toasted hazelnuts hang around long enough to make these delightful Piemontese biscuits sandwiched together with chocolate?They might be smaller than the point of a pin, but pollen grains are packed with information that endures. Pollen trapped in sediment, or fossilised within rocks, can be analysed by paleoclimatologists to chart changes in vegetation and climate going back hundreds of thousands of years. It was pollen that revealed hazel to be the first of the deciduous forest trees... Read this story
