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Other approaches to mitigating climate change have a higher level of risk. Scenarios that limit global warming to 1.5 °C typically project the large-scale use of carbon dioxide removal methods over the 21st century. [292] There are concerns, though, about over-reliance on these technologies, and environmental impacts. [293]
— Greta Thunberg, Stockholm November 2018 Thunberg says she first heard about climate change in 2011, when she was eight years old, and could not understand why so little was being done about it. The situation depressed her, and as a result, at the age of 11, she stopped talking and eating much and lost ten kilograms (22 lb) in two months. Eventually, she was diagnosed with Asperger syndrome ...
A shift of 1 or 100% (darker colours) indicates that the region has fully moved into a completely different biome zone type. [1] Climate change is already now altering biomes, adversely affecting terrestrial and marine ecosystems. [2] [3] Climate change represents long-term changes in temperature and average weather patterns.
Climate change scenarios can be thought of as stories of possible futures. They allow the description of factors that are difficult to quantify, such as governance, social structures, and institutions. There is considerable variety among scenarios, ranging from variants of sustainable development, to the collapse of social, economic, and ...
Climate restoration is the climate change [ 2] goal and associated actions to restore CO 2 to levels humans have actually survived long-term, below 300 ppm. This would restore the Earth system [ 3] generally to a safe state, for the well-being of future generations of humanity and nature. Actions include carbon dioxide removal from the Carbon ...
The controversies are, by now, mostly political rather than scientific: there is a scientific consensus that global warming is happening and is caused by human activity. [2] Public debates that also reflect scientific debate include estimates of how responsive the climate system might be to any given level of greenhouse gases (climate sensitivity).
Per capita CO2 emissions in Canada, 1790-2022. Climate change is the result of greenhouse gas emissions, which are produced by human activity. Canada was the world's 7th largest greenhouse gas emitter in terms of GHG Inventory data, as of 2021. [ 4] In 2020, Canada emitted a total of 678 million tons of carbon dioxide equivalent (Mt CO 2 eq ...
The global warming potential (GWP) is defined as an "index measuring the radiative forcing following an emission of a unit mass of a given substance, accumulated over a chosen time horizon, relative to that of the reference substance, carbon dioxide (CO 2 ). The GWP thus represents the combined effect of the differing times these substances ...