The natural environment or natural world encompasses all biotic and abiotic things occurring naturally, meaning in this case not artificial. The term is most often applied to Earth or some parts of Earth. This environment encompasses the interaction of all living species, climate, weather and natural resources that affect human survival and economic activity.
The concept of the natural environment can be distinguished as components:
Complete ecological units that function as natural systems without massive civilized human intervention, including all vegetation, microorganisms, soil, rocks, plateaus, mountains, the atmosphere and natural phenomena that occur within their boundaries and their nature.
In contrast to the natural environment is the built environment. Built environments are where humans have fundamentally transformed landscapes such as urban settings and agricultural land conversion, the natural environment is greatly changed into a simplified human environment. Even acts which seem less extreme, such as building a mud hut or a photovoltaic system in the desert, the modified environment becomes an artificial one. Though many animals build things to provide a better environment for themselves, they are not human, hence beaver dams and the works of mound-building termites are thought of as natural. (Full article...)
The natural environment or natural world encompasses all biotic and abiotic things occurring naturally, meaning in this case not artificial. The term is most often applied to Earth or some parts of Earth. This environment encompasses the interaction of all living species, climate, weather and natural resources that affect human survival and economic activity.
The concept of the natural environment can be distinguished as components:
Complete ecological units that function as natural systems without massive civilized human intervention, including all vegetation, microorganisms, soil, rocks, plateaus, mountains, the atmosphere and natural phenomena that occur within their boundaries and their nature.
In contrast to the natural environment is the built environment. Built environments are where humans have fundamentally transformed landscapes such as urban settings and agricultural land conversion, the natural environment is greatly changed into a simplified human environment. Even acts which seem less extreme, such as building a mud hut or a photovoltaic system in the desert, the modified environment becomes an artificial one. Though many animals build things to provide a better environment for themselves, they are not human, hence beaver dams and the works of mound-building termites are thought of as natural.
People cannot find absolutely natural environments on Earth,naturalness usually varies in a continuum, from 100% natural in one extreme to 0% natural in the other. The massive environmental changes of humanity in the Anthropocene have fundamentally effected all natural environments including: climate change, biodiversity loss and pollution from plastic and other chemicals in the air and water. More precisely, we can consider the different aspects or components of an environment, and see that their degree of naturalness is not uniform. If, for instance, in an agricultural field, the mineralogic composition and the structure of its soil are similar to those of an undisturbed forest soil, but the structure is quite different. (Full article...)
Greenhouse gases (GHGs) are the gases in the atmosphere that raise the surface temperature of planets such as the Earth. What distinguishes them from other gases is that they absorb the wavelengths of radiation that a planet emits, resulting in the greenhouse effect. The Earth is warmed by sunlight, causing its surface to radiate heat, which is then mostly absorbed by greenhouse gases. Without greenhouse gases in the atmosphere, the average temperature of Earth's surface would be about −18 °C (0 °F), rather than the present average of 15 °C (59 °F).
An oil spill is the unintentional release of liquidpetroleumhydrocarbon into the environment as a result of human activity. The term often refers to marine oil spills, where oil is released into the ocean or coastal waters. Oil can refer to many different materials, including crude oil, refined petroleum products (such as gasoline or diesel fuel) or by-products, ships' bunkers, oily refuse or oil mixed in waste. Spills take months or even years to clean up.
Brown is the author or co-author of over 50 books on global environmental issues and his works have been translated into more than forty languages. His most recent book is The Great Transition: Shifting from Fossil Fuels to Solar and Wind Energy (2015), in which he explains that the global economy is now undergoing a transition from fossil and nuclear energy to clean power from solar, wind, and other renewable sources. His previous book was Full Planet, Empty Plates: The New Geopolitics of Food Scarcity (2012). (Full article...)
Image 2Global oceanic and terrestrial phototroph abundance, from September 1997 to August 2000. As an estimate of autotroph biomass, it is only a rough indicator of primary production potential and not an actual estimate of it. (from Ecosystem)
Image 6Few creatures make the ice shelves of Antarctica their habitat, but water beneath the ice can provide habitat for multiple species. Animals such as penguins have adapted to live in very cold conditions. (from Habitat)
Image 9Aerial view of stormwater treatment areas in the northern Everglades bordered by sugarcane fields on the right (from Restoration of the Everglades)
Image 13A team of British researchers found a hole in the ozone layer forming over Antarctica, the discovery of which would later influence the Montreal Protocol in 1987. (from Environmental science)
Image 14Proportion of forest area by forest area density class and global ecological zone, 2015, from Food and Agriculture Organization publication The State of the World's Forests 2020. Forests, biodiversity and people – In brief (from Ecoregion)
Image 15A map of the bioregions of Canada and the US. (from Ecoregion)
Image 16A map of the Amazon rainforest ecoregions. The yellow line encloses the ecoregions per the World Wide Fund for Nature. (from Ecoregion)
Image 17Rachel Carson published her groundbreaking novel, Silent Spring, in 1962, bringing the study of environmental science to the forefront of society. (from Environmental science)
Image 19Planned water recovery and storage implementation using CERP strategies (from Restoration of the Everglades)
Image 20Climbing ferns overtake cypress trees in the Everglades. The ferns act as "fire ladders" that can destroy trees that would otherwise survive fires. (from Restoration of the Everglades)
Image 21Wetland habitat types in Borneo (from Habitat)
Image 22An Antarctic rock split apart to show endolithic lifeforms showing as a green layer a few millimeters thick (from Habitat)
Image 25The Paris Agreement (formerly the Kyoto Protocol) is adopted in 2016. Nearly every country in the United Nations has signed the treaty, which aims to reduce greenhouse gas emissions. (from Environmental science)
Image 32Compartments established by C&SF projects that separated the historic Everglades into Water Conservation Areas and the Everglades Agricultural Area. One-fourth of the original Everglades is preserved in Everglades National Park. (from Restoration of the Everglades)
Image 43A false color composite of the greater Boston area, created using remote sensing technology, reveals otherwise not visible characteristics about the land cover and the health of the surrounding ecosystems. (from Environmental science)
Image 46View of Earth, taken in 1972 by the Apollo 17 crew. Approximately 71% of Earth's surface (an area of some 361 million square kilometers) consists of ocean (from Ecoregion)
Image 47Environmental science examines the effects of humans on nature, such as the Glen Canyon Dam in the United States (from Environmental science)
Image 48Loch Lomond in Scotland forms a relatively isolated ecosystem. The fish community of this lake has remained stable over a long period until a number of introductions in the 1970s restructured its food web. (from Ecosystem)
Image 51Cattails indicate the presence of phosphorus in the water. Cattails are an invasive species; they crowd out sawgrass and grow too thick to allow nesting for birds and alligators. (from Restoration of the Everglades)
Image 56Biodiversity of a coral reef. Corals adapt and modify their environment by forming calcium carbonate skeletons. This provides growing conditions for future generations and forms a habitat for many other species. (from Environmental science)
...that many countries that signed the Kyoto Protocol actually increased the greenhouse gasemissions, contrary to the treaty? And for that, the 15 January 2011, a representative of the country had to stick their head in a hole of sand in Cancun, Mexico?
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