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Did our brain “invent” the color purple?

The color violet is made up of short wavelengths (blue) and long wavelengths (red). (Image credit: Westend61 via Getty Images) There is a lot of purple in nature: lavender flowers, amethyst stones, plums, eggplants, and purple emperor butterflies. However, if…

How do migratory birds know where they are going?

Every year, billions of birds migrate to and from the United States. Around the world, these birds travel thousands of miles to reach their seasonal habitats. Some species, like the Arctic tern (Sterna paradisaea), accumulate enough miles in their lifetime…

Southern Cassowary: A Giant Prehistoric Bird With Dinosaur Feet

Genetics suggest that the southern cassowary's ancestors were on our planet tens of millions of years ago. (Photo credit: Getty/Wokephoto17/Alamy/Trevor Collens) Name: Southern Cassowary (Casuarius casuarius) Habitat: Indonesia, Papua New Guinea and north-eastern Australia. Diet: Fruits, seeds, mushrooms, insects, snails,…