Composition of Earth's atmosphere by volume. The lower pie represents the trace gases that together compose about 0.038% of the atmosphere (0.043% with CO2 at 2014 concentration). The numbers are from a variety of years (mainly 1987, with CO2 and methane from 2009) and do not represent any single source.
User: How long did Thoreau live in the woods at Walden Pond? User: How long did Thoreau live in the woods at Walden Pond? Weegy: Thoreau lived in the woods at Walden Pond for two years, two months, and two days.
Henry David Thoreau (1817 1862) was one of the great U.S. writers of the 19 th century and perhaps the greatest of all U.S. nature writers. He is best known as the man who fled from civilization to live alone, with nature, at Walden Pond. His masterpiece, Walden, recounts that experience.