---
chapter:
  description: ~
  doi: 10.7930/J0KS6PHH
  identifier: appendix-climate-science-supplement
  number: 33
  report_identifier: nca3
  sort_key: 330
  title: 'Appendix 3: Climate Science Supplement'
  url: http://nca2014.globalchange.gov/report/appendices/climate-science-supplement
chapter_identifier: appendix-climate-science-supplement
cited_by: []
confidence: ~
description: 'Although climate changes in the past have been caused by natural factors, human activities are now the dominant agents of change. Human activities are affecting climate through increasing atmospheric levels of heat-trapping gases and other substances, including particles.'
display_name: NCA3 Finding 33.1
evidence: ~
href: http://52.38.26.42:8080/report/nca3/chapter/appendix-climate-science-supplement/finding/human-activities-affecting-climate.yaml
identifier: human-activities-affecting-climate
ordinal: 1
parents: []
process: ~
report_identifier: nca3
statement: 'Although climate changes in the past have been caused by natural factors, human activities are now the dominant agents of change. Human activities are affecting climate through increasing atmospheric levels of heat-trapping gases and other substances, including particles.'
type: finding
uncertainties: ~
uri: /report/nca3/chapter/appendix-climate-science-supplement/finding/human-activities-affecting-climate
url: ~