Staci Loewy

What is the age of the Earth? part of Early Earth:Key Questions about the Early Earth
Content page from the "On the Cutting Edge" collection discussing the age of the Earth, covering historical and contemporary scientific methods for determining Earth's age, including Ussher's chronology, Kelvin's cooling model, and modern radiometric dating of zircons and meteorites, while addressing philosophical aspects of defining Earth's "birthday" and offering classroom integration strategies.