This article mainly talks about the main cause of climate change around the world. The article states that increasing levels of greenhouse gases are causing the Earth's temperature to become warmer. The author provides many different forms of evidence that prove this popular theory. One piece of evidence given is that ice cores taken from Greenland, Antarctica, and tropical mountain glaciers show a direct connection between greenhouse gasses and climate change. In addition to that, sea level is rising at double the rate of last century and snow is also melting much faster. The author also talks about how the global temperature has risen by about 2.0 degrees Fahrenheit since the 19th century. Other examples mentioned are warmer ocean temperatures, shrinking ice sheets in Greenland and Antarctica, decreasing arctic sea ice, and an increase in the acidity of ocean waters.
Source: https://climate.nasa.gov/evidence/
Source: https://climate.nasa.gov/evidence/