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.
Welcome to the Walden Woods Project and the Thoreau Institute. The Walden Woods Project preserves the land, literature and legacy of the quintessential American author, philosopher, and naturalist, Henry David Thoreau, to foster an ethic of environmental stewardship and social responsibility.