Science & Technology

272 Items

Tel Aviv Coastline seen from Jaffa

Wikimedia Commons/ Kallerna

Journal Article - Elsevier Inc.

The ecological tradeoffs of desalination in land-constrained countries seeking to mitigate climate change

| Feb. 18, 2022

The global demand for desalinated water is increasing at a remarkable rate. In a future with increasing demand for water and low-carbon electricity, an interesting ecological dilemma emerges. In a decarbonized world, providing desalinated water for domestic use and aquatic ecological restoration could increasingly come at the expense of open space lost to renewables such as solar photovoltaics (PV) and wind turbines. In this article we examine the environmental tradeoffs of providing freshwater from desalination under a solar photovoltaic-based decarbonization strategy, using Israel as an example.

Assorted plastic collected during a spring community cleanup at the shoreline and harborfront of Hamilton, Ontario.

Jasmin Sessler

Paper

Avoiding a Plastic Pandemic: The Future of Sustainability in a Post COVID-19 World

| January 2021

The ongoing COVID-19 pandemic is upending our lives and the global economy in ways unimaginable until recently. While the overall impacts are still difficult to quantify, ramifications are sure to be felt for decades to come. Providing secure, reliable, and affordable resources for all without causing devastating environmental consequences is perhaps the greatest challenge of the 21st century. But the pandemic has significantly altered dynamics and changed priorities. How is this impacting the quest for sustainability?

In this paper we analyze these challenges by focusing on the plastic industry. There is no doubt that plastic has molded society in many ways that make our lives easier and safer, but it has also created a global environmental and sustainability crisis. In order to curb our addiction to plastic, the world had been waging a war against virgin plastic, but the pandemic has turned an enemy into a much-needed ally. How can we leverage the advantages of plastic without contributing to the world’s environmental crisis? This dilemma poses a significant challenge, but also opens an opportunity to address sustainability at a systemic level through circularity and the transition to low-carbon alternatives to petroleum-based plastics.

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Analysis & Opinions - Bloomberg Opinion

After Oil: Throwing Money at Green Energy Isn’t Enough

| Sep. 17, 2020

The geopolitical and geo-economic forces wrought by the coronavirus pandemic, as examined previously in this series, are likely to slow the transition to a more sustainable global energy mix. Fortunately, the pandemic has also resulted in governments gaining vastly greater influence over whether this shift stalls or accelerates.

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Analysis & Opinions - Bloomberg Opinion

Pandemic Is Hurting, Not Helping, Green Energy

| Sep. 16, 2020

For most people, there was nothing to celebrate when the International Monetary Fund downgraded its outlook for global economic growth in June, anticipating a contraction of 4.9% for 2020. Yet for others, such as the small but persistent group of economists and others known as the degrowth movement,” the Covid-induced economic slowdown has a silver lining.

Saudi Arabia’s Moment in the Sun

AP/Donna Fenn Heintzen

Analysis & Opinions - Carnegie Endowment for International Peace

Saudi Arabia’s Moment in the Sun

| May 07, 2019

As part of a high profile tour of China in February, Saudi Arabia’s Crown Prince Mohammed Bin Salman (MBS) has overseen a range of multi-billion dollar pledges and MOUs with Beijing. This partly reflects Riyadh’s desire to diversify sources for investments and technology following the mass withdrawal of major Western business leaders from the Future Investment Initiative in October 2018, after the murder of Saudi Journalist Jamal Khashoggi in the Saudi Embassy in Istanbul. Yet cooperation with China on renewable energy, if successful, would realize a significant first step towards Saudi Arabia’s lofty ambitions for solar and wind power.

A History of the Energy We Have Consumed

Rahm Emanuael/Wikimedia Commons

Analysis & Opinions - The New York Times

A History of the Energy We Have Consumed

| June 18, 2018

Early in Richard Rhodes’s new book, “Energy: A Human History,” we hear of a prominent citizen using colorful language to lament the state of his polluted city and urge his government to shut down industry or move it elsewhere: “If there be a resemblance of hell upon earth, it is in this volcano [on] a foggy day.” Though this could easily apply to modern-day Beijing, the speaker here is John Evelyn, a wealthy horticulturalist and one of the founders of the scientific Royal Society of London — and he’s complaining about London in 1659.

Floating desalination unit "Hydriada" powered by wind and solar energy

Creative Commons

Journal Article - Renewable and Sustainable Energy Reviews

Towards Sustainability in Water-energy Nexus: Ocean Energy for Seawater Desalination

In this article, the authors review the state of the art of ocean energy in desalination. It explores different sources of energy from the ocean that include electricity generation, as well as mechanical force and thermal energy and salinity gradients that can also be directly harnessed for powering the desalination processes. They also examine recent advances in scaling up for commercial deployment and discuss relevant cost, environmental, and social concerns.

Wind turbines in a rapeseed field in Sandesneben, Germany

Flickr/Jürgen Guerito

Journal Article - Nature

The G20 must govern the shift to low-carbon energy

| June 07, 2017

The world's energy system needs rebuilding. The Paris agreement to keep global warming “well below 2 °C above pre-industrial levels” demands that we replace fossil fuels with solar, wind, geothermal and biomass energy. The price tag is vast: investing US$120 trillion in energy projects between 2016 and 2050, at twice the current annual rate of $1.8 trillion a year, will deliver a 66% chance of achieving the Paris target. We must halve oil production and stop using coal to produce electricity.