Iridescent blue leaves on some begonias aren’t just for show — they help the plants harvest energy in low light. The begonias’ chloroplasts, which use photosynthesis to convert light into fuel, have a ...

Researchers have discovered a new species of tarantula with a rare and “enchanting” coloration: Parts of its back, legs and mouthparts are an iridescent, electric blue-violet. The spider, named ...

Begonias with striking blue leaves may represent a next step in plant evolution that puts them ahead of their ordinary green neighbours, research suggests. The blue colour results from a ...

The birdlike dinosaur Microraptor wore black — with a hint of blue. That means the dinosaur, which spread its four wings more than 120 million years ago, sported the oldest iridescent feathers ...