Blue flowers sound easy enough to find—until you start shopping and realize that a lot of plants labeled “blue” are decidedly purple. Truly blue blooms are relatively uncommon in nature, which makes ...

Colourful flowers, and the insects and birds that fly among their dazzling displays, are a joy of nature. But how did early relationships between flower colour and animal pollinators emerge? In a ...

At a dinner party, or in the schoolyard, the question of favourite colour frequently results in an answer of “blue”. Why is it that humans are so fond of blue? And why does it seem to be so rare in ...