When was the law of conservation of energy introduced?
Conservation of energy
In 1850, William Rankine first used the phrase "the law of the conservation of energy" for the principle.
Ian Bowles
As Secretary, Bowles helped guide the passing of the Green Communities Act and four other major pieces of energy and environmental legislation into law in 2008. These bills put Massachusetts at the top of state rankings in American Council for an Energy-Efficient Economy's energy efficiency scorecard in 2011, where it has stayed ever since. Under the Global Warming Solutions Act, Bowles set the most stringent greenhouse gas reduction requirement in the nation at 25 percent below 1990 levels by 2020. Bowles also oversaw the first state ocean management plan, as required by the Oceans Act. Under the state's Green Jobs Act, Massachusetts established a new quasi-government authority, the Massachusetts Clean Energy Center, to promote renewable energy and clean energy job creation, of which Bowles was its first chairman.