Although it is well known that lack of dopamine causes the motor symptoms of Parkinson's disease, it is not clear why the dopamine-producing brain cells deteriorate.Genetic and pathological studies have revealed that various dysfunctional cellular processes, inflammation, and stress can all contribute to cell damage.lthough it is well known that lack of dopamine causes the motor symptoms of Parkinson's disease, it is not clear why the dopamine-producing brain cells deteriorate.
Earth Overshoot Day is an initiative of Global Footprint Network, an international think tank that coordinates research, develops methodological standards and provides decision-makers with tools to help the human economy operate within Earthâs ecological limits.
Earth Day 2017, 2018 and further. View below the dates for (among others) Earth Day 2017 and Earth Day 2018. You can also see on which day the holiday falls and how many days it is until this holiday. Significance of Earth Day 2017. Earth Day 2017 is an event observed annually on April 22.