Sourced from Ribes nigrum (a plant native to parts of Europe and Asia), black currant extract is typically derived from black currant fruit or from the oil of black currant seeds. Black currant extracts are widely available in dietary supplement form. Black currant oil contains gamma-linolenic acid, an essential fatty acid found to reduce inflammation. In addition, black currant berries (a substance often consumed as a whole food) contain high amounts of anthocyanins, a type of antioxidant.
Hydroelectric energy is the cleanest form of renewable generation as it does not release any harmful gases, carbon dioxide, and other pollutants which directly or indirectly affect the environment.
Power generation systems used on rivers include hydroelectric dams (impoundment systems), pumped storage systems, and run-of-the-river systems. Hydroelectric Dam. This is the most common type of hydropower system, which accounts for the majority of all renewable energy production in the US. Some examples of these are the Hoover Dam and the Grand Coulee Dam. There are about 80,000 dams throughout the US, but only 2,000 of them have hydropower power plants capable of producing electricity.