Search results
Results from the WOW.Com Content Network
Pollution is the introduction of contaminants into the natural environment that cause adverse change. [ 1] Pollution can take the form of any substance (solid, liquid, or gas) or energy (such as radioactivity, heat, sound, or light). Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring ...
Major current environmental issues may include climate change, pollution, environmental degradation, and resource depletion. The conservation movement lobbies for protection of endangered species and protection of any ecologically valuable natural areas, genetically modified foods and global warming. The UN system has adopted international ...
Air pollution is the contamination of air due to the presence of substances called pollutants in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. [ 1] It is also the contamination of the indoor or outdoor environment either by chemical, physical, or biological ...
Triple planetary crisis. Triple Planetary Crisis is a term and framework adopted by the United Nations system to describe the three intersecting global environmental crises of pollution, climate crisis, biodiversity loss and/or ecological crises. [ 1][ 2][ 3] This term underscores the interdependence of these issues and their collective impact ...
Climate crisis is a term that is used to describe global warming and climate change, and their effects. This term and the term climate emergency have been used to describe the threat of global warming to humanity and Earth, and to urge aggressive climate change mitigation and transformational adaptation. [ 2][ 3][ 4][ 5]
Global dimming is a decline in the amount of sunlight reaching the Earth's surface. [2] [3] It is caused by atmospheric particulate matter, predominantly sulfate aerosols, which are components of air pollution. [4] Global dimming was observed soon after the first systematic measurements of solar irradiance began in the 1950s.
e. A pollutant or novel entity[ 1] is a substance or energy introduced into the environment that has undesired effects, or adversely affects the usefulness of a resource. These can be both naturally forming (i.e. minerals or extracted compounds like oil) or anthropogenic in origin (i.e. manufactured materials or byproducts ).
The ozone hole was much more seen as a "hot issue" and imminent risk compared to global climate change, [13] as lay people feared a depletion of the ozone layer (ozone shield) risked increasing severe consequences such as skin cancer, cataracts, [23] damage to plants, and reduction of plankton populations in the ocean's photic zone. This was ...