Scientists can determine the age of the seafloor by watching the constant changing magnetic field of our planet. When it cools down, it records the magnetic field during its formation. The two parts of the oceanic plate are pulled apart, and magnetic stripes become older as they move away from the mid-ocean ridge. Hope that helps!
It was first detected by Robert Wilson and Arno Penzias.
Recycling, riding bikes instead of using cars all the time, and use reusable straws and water bottles.
