The crossword solution for the term 'About 30% of the Earth's land' is ASIA, which is a continent located in the Eastern Hemisphere. It covers an area of 17, 212, 000 square miles, making it the world's largest continent by area. ASIA is home to over 4.5 billion people, accounting for about 60% of the world's population. Approximately 30% of the Earth's land is located in ASIA, making it the most populous and largest continent on the planet.