File Name: population and climate change .zip
We aim to shift the focus of development economics from national income accounting to people-centered policies.
The effects of climate change on humans are far reaching and include effects on health, environment, displacement and migration , security, society, human settlement , energy, and transport. Climate change has brought about possibly irreversible alterations to Earth's geological, biological, and ecological systems. A growing body of research explores the many impacts of climate change on human health, food supply, economic growth , migration , security, societal change, and public goods , such as drinking water. The consequences of these changes can help or hurt local human populations. For example, climatic changes in Siberia are expected to improve food production and local economic activity in the short to medium term. However, Bangladesh has experienced an increase in climate-sensitive diseases; such as malaria, dengue, childhood diarrhea, and pneumonia, among vulnerable communities.
Farmers need access to weather and market information to make decisions, especially as climate change alters historical patterns. Human basic needs, such as food, water, health, and shelter, are affected by climate. Changes in climate may threaten these needs with increased temperatures, sea level rise, changes in precipitation, and more frequent or intense extreme events. Climate change will affect individuals and groups differently. Certain groups of people are particularly sensitive to climate change impacts, such as the elderly, the infirm, children and pregnant women, native and tribal groups, and low-income populations.
Author contributions: N. We investigate how future population growth is relevant to climate change policy. We calculate the best optimal emissions reduction pathway given each of these two different goals that society might have and calculate how much cheaper it would be to avoid dangerous interference with the climate given a smaller rather than a larger population. We also show that whether it is ultimately better to have a smaller population in response to climate change depends on which of these two goals society chooses. Future population growth is uncertain and matters for climate policy: higher growth entails more emissions and means more people will be vulnerable to climate-related impacts. We show that how future population is valued importantly determines mitigation decisions.
The effects of global warming are already bringing harm to human communities and the natural world. Further temperature rises will have a devastating impact and more action on greenhouse gas emissions is urgently required. Population and climate change are inextricably linked.
Climate change has been described as the biggest global health threat of the 21 st century. World population is projected to reach 9. While the principal cause of climate change is high consumption in the developed countries, its impact will be greatest on people in the developing world. Climate change and population can be linked through adaptation reducing vulnerability to the adverse effects of climate change and, more controversially, through mitigation reducing the greenhouse gases that cause climate change.
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Dear EarthTalk : To what extent does human population growth impact global warming, and what can be done about it? No doubt human population growth is a major contributor to global warming, given that humans use fossil fuels to power their increasingly mechanized lifestyles. According to the United Nations Population Fund, human population grew from 1. Think about it: It took all of time for population to reach 1. During that time emissions of CO2, the leading greenhouse gas, grew fold. And with worldwide population expected to surpass nine billion over the next 50 years, environmentalists and others are worried about the ability of the planet to withstand the added load of greenhouse gases entering the atmosphere and wreaking havoc on ecosystems down below. The United States, for example, contains just five percent of world population, yet contributes a quarter of total CO2 output.
As a society, we have structured our day-to-day lives around historical and current climate conditions. We are accustomed to a normal range of conditions and may be sensitive to extremes that fall outside of this range. Climate change could affect our society through impacts on a number of different social, cultural, and natural resources. For example, climate change could affect human health, infrastructure, and transportation systems, as well as energy, food, and water supplies. Some groups of people will likely face greater challenges than others.
The role of seeds in a changing climate - linking germination ecophysiology to population and community ecology. The general objective of SeedClim is to provide a mechanistic understanding of how ongoing and future climate change affects plants at landscape to regional scales. To achieve this we have developed a new methodological framework allowing us to explore how climate-change effects vary along two major climate gradients--temperature and precipitation--and how these effects scale across levels of organisation from individuals via populations to communities. The western Norwegian fjord landscapes allow us to set up a grid of study sites along independent temperature and precipitation gradients, enabling us to study the unique and combined effects of a warmer and a wetter climate. Our 12 experimental sites are located in a climate grid where four levels of annual precipitation , , and mm are combined with three levels of mean summer temperatures 7. In collaboration with met.
Request PDF | Population and Climate Change | To review, the four broad dimensions of any complex human problem, including climate.
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