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 is best known for Walden, which chronicles his experiment in simple, self-sufficient living. Less remembered, however, is that while living at Walden Pond, he was imprisoned for refusing to pay his poll tax as a statement of protest against slavery and what he saw as an unjust war with Mexico.