They took photos of the cow’s painted right side, counting the number of bites as they happened and watching how the cows reacted. Black and white stripes help protect zebras from insect bites ...

Monarch butterflies with more white spots on their mostly orange-and-black wings are more successful at long-distance migration. Some scientists think the spots may affect airflow around their wings.

Monarch butterflies with more white spots on their mostly orange-and-black wings are more successful at long-distance migration. Some scientists think the spots may affect airflow around their wings.

They took photos of the cow’s painted right side, counting the number of bites as they happened and watching how the cows reacted. Black and white stripes help protect zebras from insect bites ...

Monarch butterflies' white spots may help them fly farther, scientists say. Think of a monarch butterfly, and a distinctive image pops up: black-and-orange wings, with a sprinkling of white spots ...