Current environmental issues: Nepal vs global

Current environmental issues are present-day problems caused by human activities that damage air, water, land, climate and living beings, and threaten health and development.

Current global environmental issues

1. Climate change and global warming – due to greenhouse gases from fossil fuels, deforestation and agriculture.
2. Ozone layer depletion – CFCs and halons thinned the ozone layer (Antarctic ozone hole); controlled by the Montreal Protocol (1987).
3. Air pollution – vehicles, industry, coal power; about 7 million premature deaths per year (WHO estimate).
4. Water pollution and scarcity – sewage, industrial and agricultural chemicals; over 2 billion people lack safely managed drinking water.
5. Deforestation – especially tropical forests (Amazon, Congo, Southeast Asia).
6. Loss of biodiversity – habitat loss, overexploitation, pollution, invasive species.
7. Land degradation and desertification – overgrazing, poor farming.
8. Acid rain – SO₂ and NOₓ from coal and vehicles.
9. Waste and plastic pollution – plastics in oceans, e-waste, hazardous waste.
10. Population growth and over-consumption – pressure on all resources.

Current environmental issues of Nepal

1. Deforestation and forest degradation – illegal logging, fuelwood use, encroachment and road building.
2. Soil erosion and landslides – fragile young mountains, steep slopes, haphazard rural roads cut by bulldozers.
3. Air pollution – Kathmandu Valley often has PM2.5 far above WHO limits; sources: vehicles, brick kilns, dust, waste burning, forest fires.
4. Water pollution – untreated sewage and industrial waste in rivers (Bagmati, Bishnumati); contaminated drinking water; arsenic in Terai groundwater.
5. Solid waste management – open dumping; the Sisdol/Bancharedanda landfill problem in Kathmandu.
6. Unplanned urbanisation – loss of open space and farmland, traffic, noise.
7. Climate change impacts – glacier melt, GLOF risk, erratic rainfall, floods and droughts, drying springs.
8. Loss of biodiversity – poaching, habitat loss, invasive species.
9. Riverbed mining – excessive sand and gravel extraction (e.g. Chure region).
10. Floods and disasters – Terai floods, landslides, earthquakes.

Comparison of Nepal's issues with global issues

Similarities: both face climate change, air and water pollution, waste and biodiversity loss. Difference: global problems come mainly from over-consumption and industry, while Nepal's come from poverty and poor planning, and Nepal suffers more from global problems it did not cause. Therefore Nepal needs both local action (laws, technology, awareness) and global support.