“…The second best tax choice is one that raises revenues in an efficient manner, because not only is a potential market failure corrected, but these taxes can be used elsewhere in the economy to offset other taxes (thereby increasing welfare), although it is important to note that standard opinion of good tax practice avoids "earmarking" funds for particular projects (Schob, 1996;De Mooij and Bovenberg, 1998;Ligthart and Van der Ploeg, 1999;Brett and Keen, 2000;Bye, 2002). The use of tax income from one source to offset another is known as the double dividend effect (e.g., see Pezzey and Park, 1998;Bosquet, 2000;Parry and Bento, 2000;Parry and Oates, 2000;Schwatrz and Repetto, 2000;Bosello et al, 2001).…”