Here's a breakdown:

* Northern Hemisphere: About 67% of Earth's landmass is located in the Northern Hemisphere. This includes continents like North America, Europe, Asia, and most of Africa.

* Southern Hemisphere: Only about 33% of Earth's landmass is located in the Southern Hemisphere. This includes continents like South America, Australia, and Antarctica.

This unequal distribution of landmass has a significant impact on Earth's climate and geography.