Rising sea levels, erratic temperatures, melting glaciers, species extinction and rising ocean temperatures are just some of the signs that the world climate is changing (global warming). This paper will track human activities that cause and accelerate climate change. The National Oceanic and Atmospheric Administration, also known as NOAA, explains that “climate is the 'mean weather' over a period ranging from months to thousands or millions of years.” NOAA defines global warming as “a change in climate (for example, temperature or precipitation) that occurs over a few decades or less, persists for at least a few decades, and causes significant disruptions in human and natural systems” ( NOAA 1). The absorption of excess greenhouse gases into the Earth's atmosphere is leading to rapid climate change and is harming plants, animals and humans. Some consequences of the rapidly changing climate are life-threatening, such as severe heat waves, heavy rain and heavy snowstorms, and stronger hurricanes. In the 20th century, the last two decades were the warmest decades in the last 400 years , and the warmest for many millennia. According to many climate experts, the worst effects of global warming are yet to come Climate change has consolidated over the past decade (NOAA 1) 19th century science, the industrial revolution, data shows that human activities have intensely contaminated the atmosphere terrestrial (Britannica 1). The continued increase in carbon dioxide (CO2) is expected to have major effects on the planet's ecosystem: Experts predict that the Earth could warm another 7.2° Fahrenheit over the course of the 21st century if we, as community, let's not decrease the emissions of the s...... half of the paper ...... ing. Even there, reliable sources of temperature data show no signs of global warming. “Satellite readings of temperatures in the lower troposphere (one scientist in the area predicts it would immediately reflect global warming) show no warming since the readings began 23 years ago.” Although there are thousands of scientists who believe that the climate has not changed at all in the last two decades. But most of the world would not agree with them. Because there were many differences in temperature and sea level rise and they found that CO2, methane and greenhouse gases are the cause of global warming produced by humans. But we have yet to discover all the events related to rapid climate change, what level of environmental restoration will ultimately be needed, or how the world's nations will share the responsibility. In the end even more