anthropogenic climate change

…to the climatic impact of human activities. Most of this attention has focused on carbon dioxide emission via fossil-fuel combustion and deforestation. Human activities also yield releases of other greenhouse gases, such as methane (from rice cultivation, livestock, landfills, and other sources) and chlorofluorocarbons (from

…warming and human-induced (or “anthropogenic”) climate change arose in the mid-20th century, but most scientific and political debate over the issue did not begin until the 1980s. Since then, scientific studies have traced increases in the concentrations of greenhouse gases (such as carbon dioxide, methane, nitrous oxide, and other…

Anthropogenic emissions currently account for the annual release of about 7 gigatons (7 billion tons) of carbon into the atmosphere. Anthropogenic emissions are equal to approximately 3 percent of the total emissions of CO₂ by natural sources, and this amplified carbon load from human activities…

Anthropogenic climate change has increased the number and severity of disturbances to old-growth forests, such as wildfires, droughts, and storms, including hurricanes and tornadoes. Climate change also worsens the potential impacts of threats such as insect pests, diseases, and invasive species.

…in weather patterns occurring under anthropogenic climate change are also expected impact savannas. Almost paradoxically, while rainfall is becoming heavier in some areas, the likelihood of longer and more intense droughts is also increasing. Dry savannas experiencing increased rainfall are likely to shift toward more shrub and tree coverage, potentially…