industrialization

Greenhouse Gases Continue To Rise | Earth Wise

May 24, 2023 By EarthWise Leave a Comment

Despite all the focus on reducing emissions of greenhouse gases, there continues to be little progress toward actually accomplishing reductions. A combination of growing populations, increasing industrialization in the developing world, and just plain reluctance on the part of many sectors of society to act, have all contributed to the continuing buildup of climate-altering gases in the atmosphere.

Levels of carbon dioxide, methane, and nitrous oxide – the three greenhouse gases produced by human activity that are the major contributors to climate change – all continued historically high rates of growth in 2022.

CO2 levels rose by 2.13 parts per million last year, roughly the same rate observed during the past decade. The current level of 417 ppm is 50% higher than pre-industrial levels. Increases of more than 2 ppm have occurred for 11 consecutive years. Prior to 2013, there had never even been 3 years in row with increases of that size.

Methane levels increased by 14 parts per billion, the fourth largest increase over the past 40 years. Methane levels in the atmosphere are now two-and-a-half times greater than their pre-industrial level.

The third most significant greenhouse gas – nitrous oxide – also saw a large increase, reaching 24% above pre-industrial levels.

Carbon dioxide emissions are by far the most important contributor to climate change and the continuing widespread burning of fossil fuels is the primary source. There are widespread intentions to reduce carbon dioxide emissions, but those intentions have not yet resulted in sufficient actions.

**********

Web Links

Greenhouse gases continued to increase rapidly in 2022

Photo, posted May 16, 2014, courtesy of Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Coastal Land Reclamation | Earth Wise

April 3, 2023 By EarthWise Leave a Comment

People are artificially expanding the coastlines of cities by extending industrial ports and creating luxury residential waterfronts. Major cities have added 900 square miles to their coastlines just since 2000.

A recent study published in the journal Earth’s Future made use of satellite imagery to analyze land changes in 135 cities with populations of at least 1 million. But population growth is not the only driver of coastal land reclamation. It is popular in places that are eager to enhance their reputation and promote revenue growth.

At present, coastal land reclamation is most common in the Global South, where many economies are growing. In the past, the Global North dominated the use of coastal land construction.

The largest additions to land area occurred in China, Indonesia, and the United Arab Emirates. Port extension is the most common reason for development. Shanghai alone has added 135 square miles of land.

New land is typically created by piling sediments in the ocean, building cement sea walls and structures to contain sediments or cement, or sometimes filling in wetlands and other shallow areas of water near the coast. The ecological impacts of reclamation are immense and, unfortunately, are not always considered. Projects affect both the local ecosystems as well as those of the places where fill materials are obtained.

Industrialization and the need for urban space have driven much coastal reclamation. Some projects, such as the palm-tree-shaped artificial islands of Dubai, are essentially for prestige. Some cities, including Shanghai, are building new land in consideration of future sea level rise.

**********

Web Links

New Land Creation on Waterfronts Increasing, Study Finds

Photo, posted October 15, 2010, courtesy of Werner Bayer via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Solar And Wind Power In China | Earth Wise

April 2, 2020 By EarthWise Leave a Comment

Reducing greenhouse gas emissions is a global challenge and nowhere is that challenge greater than in China. China accounts for 30% of the world’s emissions and much of that comes from coal power plants. If the world is going to reach its climate targets, China is going to have to replace as much as possible of its current power mix with renewable energy.

As of 2018, China still made 69% of its electricity from fossil fuels. Its vast coal reserves have driven its rapid industrialization and better standard of living. But terrible air pollution problems along with climate issues have led to heavy investments and rapid expansion of both wind and solar power in China.

China is now a world leader in renewable energy, both in terms of producing and using renewable power. At the start of 2016, China had installed a total of 145,000 megawatts of wind power, which is 3,000 MW more than all 28 European Union countries combined. And this has occurred even though China only started developing their wind power industry 30 years later than the first EU countries.

Until 2009, China exported almost all the solar panels it produced. But gradually China began to use solar energy in a big way. The industry took off in 2014, and growth has been exponential. Solar power production in China is now almost as extensive as wind power.

One has to consider that much of China’s electricity production is used by industries that produce products for the rest of the world. In effect, these are exported emissions. China has a long way to go in replacing its fossil fuel generation and we all have a stake in China succeeding in the task.

**********

Web Links

China’s rapid development of solar and wind power

Photo, posted November 12, 2007, courtesy of Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

The Deadly Cost Of Pollution

December 8, 2017 By EarthWise Leave a Comment

There is deservedly a great deal of focus on the effects that carbon pollution is having upon the climate and most countries around the world are working to reduce their emissions. However, even if climate effects were not a serious threat to humanity, pollution is a deadly menace to human health.