Links to web sites

EPA page. https://www.epa.gov/climate-indicators/climate-change-indicators-atmospheric-concentrations-greenhouse-gases

http://freethoughtblogs.com/

http://books.google.ca/books?id=js9y1nkx_58C&printsec=frontcover&dq=epictetus+enchiridion&hl=en&sa=X&ei=ZBjZUPWyF4zLqAG7mIGgCA&redir_esc=y

Stoics
http://www.stoics.com/seneca_epistles_book_1.html
http://www.philosophybasics.com/philosophers_zeno_citium.html

http://nagrs.ca/

http://www.smithsonianmag.com