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Drying rivers and hydropower

February 7, 2025 By EarthWise Leave a Comment

Drying rivers threaten hydropower around the world

A decade ago, Ecuador began a major transition to using hydroelectric power.  Like in many other South American countries, the presence of abundant rivers could supply large amounts of energy and drive economic expansion and lead to a new era of prosperity.

This ambitious plan has run into the impacts of climate change.  An extraordinary drought has engulfed much of South America, drying rivers and reservoirs, and has put Ecuador’s power grid on the brink of collapse. 

Since September, daily energy cuts in Ecuador have lasted as long as 14 hours.  An industry group says that the nation is losing $12 million in productivity and sales for every hour the power is out.  Just a few years ago, Ecuador was making great strides in reducing poverty.  Now, as the energy crisis has increased its grip on the country, much of what was achieved is being lost.

Ecuador’s situation is not unique.  In recent years, abnormally dry weather in multiple places has resulted in extreme low water levels in rivers, reducing hydropower resources in Norway, Canada, Turkey, and even rainforest-rich Costa Rica.

Overall, more than one billion people live in countries where more than half of their energy comes from hydroelectric plants.  With a warming climate and increasing incidence of extreme weather events like drought, it is likely that hydropower will become a less reliable energy source.  More than a quarter of all hydroelectric dams are in places with a medium to high risk of water scarcity by 2050. 

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The Rivers Run Dry and the Lights Go Out: A Warming Nation’s Doom Loop

Photo, posted January 15, 2020, courtesy of Pedro Szekely via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Olive oil and climate change

June 18, 2024 By EarthWise Leave a Comment

Climate change threatens the future of olive oil

Olive oil is a liquid fat obtained by mashing whole olives and extracting the oil.  A superfood staple of the Mediterranean diet, olive oil is used in kitchens around the world for frying, sauteing, baking, and as a condiment.  It can also be widely found in cosmetics, soaps, and pharmaceutical products. 

Globally, 2.6 million tons of olive oil were consumed last year.  Spain is currently the world’s largest producer of this “liquid gold,” accounting for 44% of global production.  The second largest producer of olive oil is Italy, followed by Greece, Tunisia, Turkey, and Morocco.   

But recently, the price of olive oil has been rocketing up.  Droughts, wildfires, floods, and heat waves, combined with pests, have punished olive-producing regions around the world.  The climate-fueled extreme weather has significantly impacted olive oil production in southern Europe.  Olive trees are exceedingly vulnerable to climate change. 

Spain, for example, typically produces somewhere between 1.3 to 1.5 million metric tons of olive oil each harvest.  However, officials expect a production range of only 830,000 to 850,000 metric tons this season. 

This shortage has sent prices soaring.  According to the International Monetary Fund, the average price of olive oil has doubled over the past two years.  In fact, the price is currently hovering at or around $10,000 per metric ton.  And there doesn’t seem to be much relief in sight.  

The record-breaking price has also unsurprisingly fueled a surge in crime, with criminals targeting supermarkets, oil mills, and olive groves. 

The changing climate continues to threaten food security around the world. 

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‘Liquid gold’: An olive oil shortage is fueling record prices and food insecurity fears

Extra virgin olive oil prices tipped to top £16 a litre next month

Photo, posted October 29, 2015, courtesy of the U.S. Department of Agriculture via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Planting Millions Of Trees Isn’t So Easy | Earth Wise

November 11, 2022 By EarthWise Leave a Comment

Mass tree plantings are not always effective

There are initiatives around the world to plant millions of trees as a way to fight climate change.  Unfortunately, scientists have observed that many of these projects are ill-conceived and poorly managed.  Some have failed to grow any forests at all.

One such project was an attempt to plant a million mangrove seedlings in coastal mud on the Filipino island of Luzon in 2012.  Ten years later, less than 2% of the trees have survived.  The other 98% have died or have washed away.  The problem was that the site of the project was ecologically unsuited to mangroves because it is too waterlogged and there is no oxygen available except in a few sheltered spots.

In 2019, the Turkish government managed the planting of 11 million trees in 2,000 sites across the country.  A later survey found that 90% had died, although the government denies that assertion.

Many other projects have also had dismal results.  The causes of failure vary but include planting single species of trees that become vulnerable to disease, competing demands for land, changing climate, planting in areas not previously forested, and lack of ongoing care for the saplings including watering them.

Nobody is opposed to mass tree planting.  There is no anti-tree lobby.  But tree planting is sometimes a form of greenwashing.  It is great for public relations but unless it is done properly with appropriate planning, it can be a waste of effort and money.  The result can be a phantom forest that does nothing for the climate.

Forest planting can work if the social and environmental conditions are right, and if planting is followed by long-term monitoring and care of the trees.

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Phantom Forests: Why Ambitious Tree Planting Projects Are Failing

Photo, posted April 20, 2016, courtesy of the U.S. Navy / Mass Communication Specialist 2nd Class John Benson via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

Plastic Recycling Isn’t Working | Earth Wise

June 13, 2022 By EarthWise Leave a Comment

plastic recycling is not working

A recent report from several environmental organizations shows that plastic recycling rates in the U.S. have actually declined in the last several years from about 8.7% of discarded plastic to less than 6%.   Meanwhile, since 1980, per capita plastic waste generation has increased 263%, totaling 218 pounds of plastic waste per person as of 2018.

Diminishing recycling rates don’t necessarily indicate a lack of interest by the public.  Plastic recycling is a complicated process.  There are multiple types of plastic that can’t be intermingled and there are no simple and sustainable ways to recycle many forms of plastic.   On top of that, the declining recycling rate also reflects the fact that we no longer can export our plastic waste to countries like China and Turkey, which have banned U.S. waste imports.

Recycling in general is a successful practice.  Paper recycling rates are around 66% as of 2020.  Cardboard recycling was at 88.8% in 2020, and metal recycling rates range from 27% to 76%, depending on the type of metal.  Glass recycling rates are a little over 30%.  Only plastic recycling has never reached 10%, even before shipping our waste overseas and declaring it to be recycled was going on.

According to environmental organizations focused on the global plastic problem, there is no circular economy of plastics.  Perhaps if truly biodegradable plastics became practical, economical, and widely utilized, the situation would be different.  As things stand, the only solution is to reduce the production, use, and disposal of plastics.

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Plastics Recycling ‘Does Not Work,’ Environmentalists Stress as U.S. Recycling Rates Drop to 5%

Photo, posted May 13, 2021, courtesy of Ivan Radic via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

Lake Tuz Is Disappearing | Earth Wise

January 10, 2022 By EarthWise Leave a Comment

Lake Tuz is Turkey’s second-largest lake and one of the world’s largest hypersaline lakes.  Its high salt content makes it an ideal breeding ground for some migratory bird species, including flamingos, which are often present there in huge numbers in the spring and summer.

Now, Lake Tuz rarely spans an area much larger than a puddle. In some summers, it completely dries up.  It did so this past summer, which resulted in the deaths of thousands of flamingos.

According to experts, Lake Tuz is a victim of climate change-induced drought, which has hit the region hard, and decades of harmful agricultural policies that exhausted the underground water supply.

Water in this region has become increasingly scarce.  The Mediterranean Basin has already seen more frequent and intense droughts, and is considered a climate change hotspot. 

According to new research, which was recently published in the journal Regional Environmental Change, Lake Tuz generally contained enough water in August for the lake to be considered permanent up until 2000.  But between 2001 and 2016, something shifted.  Water spanned less than 20% of the lake in every August except for one, and droughts became more frequent and intense. And in some years, the lake completely dried up.   

What caused this change?  According to the research team, Lake Tuz’s decline coincided with the excessive use of groundwater and surface water resources responsible for feeding the lake.  Some streams were rerouted for agricultural purposes, while others were dammed.  And when surface water sources dwindled, people turned to groundwater that historically fed the springs in Lake Tuz. 

Lake Tuz may be on the brink of extinction. 

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Impact of climate variability on the surface of Lake Tuz (Turkey), 1985–2016

Disappearing Lake Tuz

Photo, posted August 16, 2021, courtesy of Godot via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.

The Return Of The Bald Ibis

September 6, 2018 By EarthWise 1 Comment

https://earthwiseradio.org/wp-content/uploads/2018/08/EW-09-06-18-The-Return-of-the-Bald-Ibis.mp3

The northern bald ibis, also known as the waldrapp, is a strange-looking bird with a long, curved beak, a naked head, and feathers that point straight into the air like a Mohawk haircut.  In former centuries, it occurred widely in northern and eastern Africa, Asia Minor, Arabia, and parts of Europe.  The ancient Egyptians considered it to be an afterworld divinity and its likeness can be seen in hieroglyphs dating back thousands of years.

[Read more…] about The Return Of The Bald Ibis

Duping Poachers

March 31, 2016 By WAMC WEB

https://earthwiseradio.org/wp-content/uploads/2016/03/EW-03-31-16-Duping-Poachers.mp3

According to the Humane Society of the United States, hunters legally kill tens of millions of animals every year.  But hunters also illegally kill just as many animals – if not more – often either on closed lands or out of season.  Few perpetrators of this deadly crime against wildlife are ever caught or punished.

[Read more…] about Duping Poachers

Thanksgiving Turkeys

November 19, 2015 By EarthWise

https://earthwiseradio.org/wp-content/uploads/2015/10/EW-11-19-15-Thanksgiving-Turkeys.mp3

Mashed potatoes, gravy, cranberry sauce, and pumpkin pie.  Thanksgiving is just one week away.  Many of us will spend the next several days shopping around for ingredients, including one of this country’s oldest traditions: the turkey.

[Read more…] about Thanksgiving Turkeys

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