The pictures above illustrate some of the global environmental threats that the world faces nowadays, among those threats are:
Atmospheric emissions – Sending out to the atmosphere chemicals or biological materials that cause disease or death to humans and damage other living organisms and the natural environment.
- Chemical discharges – Toxic chemicals used at industrial facilities and released as waste into the sea.
- Climate changes – A warmer climate, with rising temperatures and the melting of glaciers, and more frequent extremes phenomena such as floods and droughts.
- Energy consumption – A significant growth in the energy used, causing serious environmental problems such as global warming emissions.
- Deforestation – Cutting down trees in large areas, disrupting the natural balance of ecological systems.
- Overfishing – Catching too many fish in an area of the sea.
- Overpopulation – When the number of people in a group exceeds the carrying capacity of the region occupied by the group. This is a reality in some parts of the world (for example in China and India) contrasting to others where desertification is a problem (for example Somalia and Ethiopia).
- Ozone depletion – Destruction, and consequent reduction, of the ozone layer, caused by global pollution, provoking an increase in UVB radiation.
- Pollution – Littering, soil contamination, noise, air and water pollution are different forms of pollution.
- Raw sewage – Untreated waste matter, such as human urine or solid waste, pumped into the sea.
- Soil erosion – By wind or water flow, soil and rock are removed from the Earth's surface and then transported and deposited in other locations.
- Toxic wastes – Dangerous wastes, that may be liquid or solid and contain chemicals, radiation or other toxins, from farming, construction, laboratories, hospitals, and other industries.
- Water shortages – A situation in which there is not enough water because the available potable water in a region is less than the region's demand.