Seasons and the yearly pattern of daylight

Seasons describe recurring changes during the year, including differences in daylight, temperature, rainfall, and the activity of living organisms. Their character varies around the world. Some regions have strong contrasts between summer and winter, while others are...

Whales: Giants of the Ocean

Whales: Giants of the Ocean Whales are among the largest and most remarkable animals on Earth. These marine mammals live in oceans around the world, from warm tropical waters to the cold seas surrounding the poles. Life Beneath the Surface Although whales spend their...