There are optimal velocities for different types of pitches. For instance, you want your change-up to be thrown at a slower speed than your fastball. Pitchers' velocities often vary. Tim Wakefield, a knuckleballer of the Boston Red Sox, for instance, has a slow fastball, clocking in the high 70s at most.
Green Climate Fund (GCF) The GCF is an operating entity of the financial mechanism of the Convention and is accountable to and functions under the guidance of the COP.
Also, what does going green mean in practice is to drive less, and use the public transport instead. Automobiles are one of the single largest sources of air pollution on earth today, and the harmful gases released contribute to global warming and climate changes.