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It looks simple - a pretty blue cornflower - but this plant is causing controversy in Austria. It's the chosen flower of the far-right Freedom Party, even though it was once associated with the Nazis.

Packaging red-rose anthocyanin as part of a ‘superpigment’ in another flower turns it brilliant blue. The same anthocyanin pigment makes roses red but cornflowers blue 1, a phenomenon that has so far ...

We'll say it - we've had enough of the winter blues and want to embrace all the brightness and colourful nature spring has to offer (just a few days to go until spring officially starts). But the one ...