The good news: the U.S. is making a tectonic shift from burning coal to produce the majority of its electricity to using cleaner natural gas. The changeover produces less CO2, making electric cars cleaner across the country, roughly equivalent to a hybrid.
Dopamine is a neurotransmitter, a chemical responsible for sending messages between the brain and different nerve cells of the body. It's responsible for many functions, including memory, sleep, mood, pleasurable reward, behavior and cognition.
Dopamine is one of many chemicals in the brain that help to regulate its activity. These chemicals are known as neurotransmitters. As the name implies, neurotransmitters work to transmit signals across brain cells, also known as neurons. But dopamine is an especially important neurotransmitter.