
In Our Seasons Are All Because of a Tilt, narrator Sir David Attenborough explains how our annual rhythms are caused by Earth’s tilt on its axis as it orbits the Sun. Trees blossom or shed leaves, daylight increases or decreases, and animals adapt to the changes. This video is excerpted from BBC's Planet Earth, a breathtaking documentary series that highlights the natural wonders of our planet.


In Our Seasons Are All Because of a Tilt, narrator Sir David Attenborough explains how our annual rhythms are caused by Earth’s tilt on its axis as it orbits the Sun. Trees blossom or shed leaves, daylight increases or decreases, and animals adapt to the changes. This video is excerpted from BBC's Planet Earth, a breathtaking documentary series that highlights the natural wonders of our planet.
