Medicare is a federally funded health insurance program for Americans over age 65 and people who have been deemed disabled. In 1972, people requiring dialysis became newly entitled to this health benefit.
Climate change is any significant long-term change in the expected patterns of average weather of a region (or the whole Earth) over a significant period of time. Climate change is about abnormal variations to the climate, and the effects of these variations on other parts of the Earth.
For global climate change during Earth's history, see Climate change. Global change refers to planetary-scale changes in the Earth system. The system consists of the land, oceans, atmosphere, polar regions, life, the planetâs natural cycles and deep Earth processes. These constituent parts influence one another.