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Earth Optimism is a movement promoting a positive outlook towards problems related to environmental or climate issues. Earth Optimism provides an alternative narrative to mainstream environmental news by highlighting the potential for humans to positively impact the environment by making small changes at individual and community levels.
Other environmental impacts of transport systems include traffic congestion and automobile-oriented urban sprawl, which can consume natural habitat and agricultural lands. By reducing transportation emissions globally, it is predicted that there will be significant positive effects on Earth's air quality, acid rain, smog and climate change. [278]
With the onset of the pandemic, some positive effects on the environment as a result of human inactivity were observed. In 2020, carbon dioxide emissions fell by 6.4% or 2.3 billion tonnes globally. [2] In April 2020, NO x emissions fell by up to 30%. [3]
Other environmental impacts of transport systems include traffic congestion and automobile-oriented urban sprawl, which can consume natural habitat and agricultural lands. By reducing transport emissions globally, it is predicted that there will be significant positive effects on Earth's air quality, acid rain, smog, and climate change. [6]
[143] [144] In 2019, a warning on climate change signed by 11,000 scientists from 153 nations said that human population growth adds 80 million humans annually, and "the world population must be stabilized—and, ideally, gradually reduced—within a framework that ensures social integrity" to reduce the impact of "population growth on GHG ...
Human impact on the environment (or anthropogenic environmental impact) refers to changes to biophysical environments [14] and to ecosystems, biodiversity, and natural resources [15] caused directly or indirectly by humans.