However, as discussed earlier, the lines blur with regard to investments in innovation of green technologies because of their status as public goods. There are also international public funds available to help countries finance investments in green technologies, including through the United Nations Framework Convention on Climate Change,7 the World Bank Group, and other sources of aid as discussed in chapter VI. However, these funds tend to be myopic and extremely pro-cyclical, increasing during boom periods and falling during economic downturns. This is partly because the fund managers themselves are short-sighted, and partly because their own funding sources tend to grow during boom periods and collapse during economic recessions (Stiglitz and others, 2006).