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Powering Britain with sun and wind

November 8, 2023 By EarthWise Leave a Comment

The United Kingdom is quite small in size compared with the US, but its population of 67 million makes it a fairly large country with substantial energy needs. A recent study by Oxford University looked at the ability of wind and solar power to provide for those energy needs over the course of time.

According to the study, Britain’s energy needs could easily be met entirely by the two sources of clean power. Wind and solar can provide significantly more energy than the highest energy demand forecasted for 2050 and nearly 10 times the current electricity demand.

Britain currently requires 299 TWh per year. The Oxford study found that wind and solar could generate as much as 2,896 TWh per year. Furthermore, the researchers stated that these estimates are intentionally conservative, taking into account concerns around land use and the visual impact of installations.

The analysis assumes that offshore wind would produce nearly three-quarters of the energy required. Onshore wind would contribute about 7%, while taking up only 0.07% of the country’s land. Utility-scale solar would add about 19% of the power. The small remainder comes from rooftop solar. The researchers do point out that the power grid would require significant upgrades to handle all this renewable energy and that there would need to be appropriate quantities of energy storage.

According to the authors of the study, achieving these results is a question of ambition rather than technical feasibility. So far, the UK government has not been aggressive in making the transition to renewable energy.

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Wind and solar power could significantly exceed Britain’s energy needs

Photo, posted November 4, 2021, courtesy of Steve Knight via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

The Cost Of Invasive Species | Earth Wise

September 27, 2023 By EarthWise Leave a Comment

According to a new report published by the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services for the United Nations, invasive species introduced to new ecosystems around the world are causing more than $423 billion in estimated losses to the global economy every year. These economic costs are incurred by harming nature, damaging food systems, and threatening human health.

According to the report, these costs have at least quadrupled every decade since 1970 and the estimates are actually conservative because it’s difficult to account for all of the effects of invasive species.

The report estimates that humans have intentionally or unintentionally introduced more than 37,000 species to places outside their natural ranges. More than 3,500 of them are considered invasive because they are harmful to their new ecosystems. Invasive nonnative species were a major factor in 60% of known extinctions of plants and animals.

Some species are relocated deliberately by the wildlife trade and international shipping. Other plants and animals end up hitching a ride with ordinary travelers as they move about by car, boat, plane, or train.

Invasions can damage human health. Mosquitos that transmit diseases like malaria, dengue fever, and the Zika virus have become invasive around the world. The wildfires in Hawaii this summer were fueled by invasive nonnative grasses in a warming climate.

Nearly every country in the world has agreed to participate in a sweeping agreement to preserve biodiversity and reduce invasive species. It is an essential global goal.

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Invasive Species Are Costing the Global Economy Billions, Study Finds

Photo, posted June 2, 2022, courtesy of Sam Stukel (USFWS) via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio

A War On Wolves

March 17, 2022 By EarthWise Leave a Comment

America has a long history of persecuting wolves. In 1905 the federal government tried biological warfare, infecting wolves with mange. In 1915, Congress passed a law requiring the eradication of wolves from federal land. By 1926, all the wolves in Yellowstone National Park had been poisoned, shot, or trapped. By 1945, wolves had been essentially eliminated from the American West.

All of this was driven by the fantasy that wolves were a major menace to livestock and a threat to big game.

In the 1990s, wolves were reintroduced to Yellowstone National Park and central Idaho and the result was one of the greatest success stories in the history of wildlife management. There were multiple improvements to the greater Yellowstone ecosystem. Wolves as important predators are essential elements of healthy ecosystems in the American west.

For reasons difficult to fathom, the status of wolves has become political. Conservative lawmakers in Idaho, Montana, Wyoming, and Wisconsin have essentially declared war on wolves, radically liberalizing wolf trapping and hunting regulations. In Wyoming, it is now legal to kill wolves at any time by virtually any means, including running them over with snowmobiles and incinerating pups and nursing mothers in dens. Idaho has bounties as high as $2,000 for killing wolves.

The reasons are just as bogus as ever. Livestock predation is the big claim. In 2015, 1,904 wolves shared the Rocky Mountain West with 1.6 million cattle. Wolves killed all of 148 of them.

Evidently, wolves have become identified as a liberal cause and, as such, are now the enemy of conservative politics.

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America’s New War on Wolves and Why It Must Be Stopped

Photo, posted April 6, 2016, courtesy of Yellowstone National Park via Flickr.

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Support For A Green New Deal

January 23, 2019 By EarthWise Leave a Comment

Shortly after the November election, activists held a sit-in at Nancy Pelosi’s office calling for a Green New Deal – a plan to transform the U.S. energy economy in order to mitigate the effects of climate change as well as address various issues of economic justice. While a number of Congress people have pledged to back the creation of a select committee to develop such a plan, it remains a political football and it remains to be seen whether anything will come of the idea.

There appears to be much less reticence on the part of voters, at least according to a survey conducted by the Yale Program on Climate Change Communication at the end of November. The survey gave a brief explanation of the Green New Deal and asked respondents “How much do you support or oppose this idea?”

The result was that 81% of registered voters either “strongly” or “somewhat” supported it. Support was stronger among Democrats at 92%, but a majority of Republicans were also in favor. Some 57% of self-identified conservative Republicans even thought it was a good idea.

The Green New Deal would accelerate the transition from fossil fuels to clean, renewable energy. The goal would be to generate 100% of the nation’s electricity from renewable sources within the next 10 years; upgrade the nation’s energy grid, buildings, and transportation infrastructure; increase energy efficiency; invest in green technology research and development; and provide training for jobs in the new green economy.

Even though most Americans have strong support for the ideas of the Green New Deal, it is quite uncertain whether such an initiative could become a reality, given that very influential special interest groups – notably the fossil fuel industry – will be fighting it tooth and nail.

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81% of Voters Support a Green New Deal, Survey Finds

Photo, posted March 19, 2012, courtesy of Kate Ausburn via Flickr.

Earth Wise is a production of WAMC Northeast Public Radio.