US federal report says humans are the primary driver of climate change

By: Sam Garnett

November 05, 2017

13 US federal agencies, including the Environmental Protection Agency and the NSF, have released a comprehensive scientific report on climate change. The report details the evidence and research that has been done on climate and weather and strongly states that human activity is the primary cause behind the warming of our planet.

From the executive summary:

“This assessment concludes, based on extensive evidence, that it is extremely likely that human activities, especially emissions of greenhouse gases, are the dominant cause of the observed warming since the mid-20th century. For the warming over the last century, there is no convincing alternative explanation supported by the extent of the observational evidence.

In addition to warming, many other aspects of global climate are changing, primarily in response to human activities. Thousands of studies conducted by researchers around the world have documented changes in surface, atmospheric, and oceanic temperatures; melting glaciers; diminishing snow cover; shrinking sea ice; rising sea levels; ocean acidification; and increasing atmospheric water vapor.”

The release of the report came as a surprise to many, as it was approved by a White House that has clearly signaled its apathy towards climate science. EPA Leader Scott Pruitt recently named a number of industry spokespeople to the advisory board, one of whom has stated that Modern air “is a little too clean for optimum health.”. The newly named US Ambassador to Canada has also stated her belief in “both sides” of the science on climate change. Despite this opposition, the US Federal report clearly demonstrates the need for decisive policy action to mitigate the effects of climate change.