During his time in this historic post established in he held critical responsibilities across the whole field of public health and health care. He has produced landmark reports which have set health policy and legislation in fields such as stem cell research, clinical governance, quality and safety of health care, infectious disease control, patient empowerment, poor clinical performance, smoke free public places, medical regulation, and organ and tissue retention.
Several years of study have gone into this page to present a hopefully unbiased examination of the issue of global warming. This is a "big picture" analysis of the scientific studies related to global climate change.
Recently, 86 evangelical leaders signed an initiative urging the adoption of legislation to reduce carbon dioxide emissions see Evangelical Leaders Join Global Warming Initiative. Are these suggestions the best way to address the global warming issue?
Rich Deem Is the world getting warmer and, if so, are the actions of mankind to blame for these temperature increases? The burning of fossil fuels converts carbon in the biomass into carbon dioxide CO2which is a "greenhouse" gas. This and other greenhouse gases such as methane tend to trap energy from the Sun on the earth.
Many scientists have sounded the alarm that we must reduce our use of fossil fuels. Others, including a number of prominent conservatives, have said that we have little to worry about. This page examines the basic questions and the answers we are getting from scientific studies, including historical and reconstructed values for greenhouse gases, temperature, and other variables that impact earth's climate.
In addition, we will examine some of the theory behind the science that causes most scientists to be concerned. Since this page is written at a lay level, we are not going to examine the details involved in climate modeling that concerns most scientists.
However, some background is necessary in order to understand what the fuss is about. By examining the earth's rocks and minerals, scientists have determined that liquid water was probably on the earth as early as 4.
However, the amount of energy received from the Sun is dependent upon the earth's orbit specifically, its eccentricity, precession, and tiltwhich changes slightly at regular intervals.
Solar energy is partly absorbed and partly reflected by the earth. In addition, some of the energy absorbed by the earth is radiated back into space. The net difference in energy absorbed vs.
The composition of the atmosphere greatly affects how much energy from the Sun is radiated back into space.
Minor components, water vapor and carbon dioxide, are greenhouse gases that reduce the amount of the earth's energy that radiates back into space. Since the amount of water vapor in the atmosphere is relatively constant, scientists' main concern is the amount of carbon dioxide, which is produced by burning of fossil fuels and wood, and by decomposition of biologically-produced materials a significant amount of which is due to deforestation.
Industrialization of most of the world has resulted in a rapid increase in the burning of fossil fuels, which is greatly increasing the amount of carbon dioxide released into the atmosphere.
Scientists are concerned that increases in the amount of the greenhouse gas carbon dioxide will result in worldwide temperature increases that will affect the ecosystems of the planet. In the short-term, several species would be expected to become extinct.
Ultimately, it is possible that a runaway greenhouse effect could make the earth uninhabitable by all species including us. First, let's look at what is happening with atmospheric carbon dioxide levels.
Atmospheric carbon dioxide Figure 1.Significant Energy E vents in Earth's and Life's History as of Energy Event. Timeframe. Significance. Nuclear fusion begins in the Sun. c. billion years ago (“bya”) Provides the power for all of Earth's geophysical, geochemical, and ecological systems, with .
omd asia pacific most medaled media network cannes lions festival of creativity Several years of study have gone into this page to present a (hopefully) unbiased examination of the issue of global warming.
This is a "big picture" analysis of the scientific studies related to global climate change. Dec 11, · Australia in an age of geopolitical transition 11 December Author: Gareth Evans, ANU. As the global centre of economic gravity shifts from the Euro-Atlantic to Asia, five accompanying geopolitical shifts demand particular attention: China’s rise, the United States’ comparative decline, India’s emergence as a major player, North Korea’s acquisition of nuclear weapons and ASEAN’s.
In a world largely starved for structural growth, both cyclical and secular forces are now working in concert to create a favorable environment for capital deployment across many parts of Asia. Key to our thinking is that the current macro backdrop, including a more favorable currency environment as well as a more stable China, has turned more positive.
Age of Transition is a five part series on the fundamental changes taking place within the global economy at the turn of the 21st century. In the past few decades, our world has changed in profound ways and this series traces these changes along four main dimensions by looking at the rise of sustainability, globalization, the proliferation of .