Climate Change
Climate change refers to significant changes in global temperatures and weather patterns over time that alter the Earth’s climate system. These shifts can result from natural factors such as volcanic activity or variations in solar radiation, but currently, anthropogenic activities (primarily greenhouse gas emissions) are driving rapid and unprecedented changes.
Key Concepts
- Greenhouse Effect: The process by which certain gases trap heat within the atmosphere.
- Global Warming: A gradual increase in Earth’s temperature over time due to higher levels of CO2 and other greenhouse gases.
- Weather Extremes: Increased frequency and intensity of hurricanes, droughts, floods, and wildfires.
Health Risks
- Heat-related illnesses: heat-stroke, heat exhaustion, dehydration.
- Respiratory issues: Asthma exacerbations, allergies from pollen changes.
- Vector-borne diseases: Increased transmission rates for malaria, Lyme disease, Zika virus.
- Mental health impacts: Anxiety, depression related to displacement and loss.
Social Impacts
- Migration: People moving due to unlivable conditions or economic opportunities linked to climate change.
- Economic Disparities: Vulnerability of low-income communities who lack the resources to adapt.
- Infrastructure Strain: Damage to infrastructure from extreme weather events, leading to higher costs for rebuilding.
Policies and Initiatives
- Green New Deal: Proposes sweeping changes to America’s energy, transportation, building, agriculture, and waste sectors.
- Paris Agreement: Global pact with targets to limit global warming this century well below 2°C above pre-industrial levels.
Related Resources:
- Climate Change Adaptation Strategies
- Environmental Policies in the US
Recent Developments
- Health Risks to U.S. Communities and Vulnerable Populations
- The video, “How Climate Affects Community Health,” highlights the increasing health risks that a changing climate poses to communities across the United States. Scientific consensus indicates that global climate change is leading to more frequent and severe extreme weather events, unhealthy air quality, and disease spread.
- Clip title: how climate affects community health - full video
- Author / channel: Centers for Disease Control and Prevention (CDC)
- URL: https://www.youtube.com/watch?v=JywsWktvODc
2026 04 11 Climate Change Health Risks to US Communities and Vulnerable Populatio