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.
This attempt was the subject of many of his writings. Thoreau's masterpiece, Walden, or Life in the Woods (1854), is the result of two years, two months, and two days (from 1845 to 1847) he spent living in a cabin he built at Walden Pond on property owned by Emerson.