Science & Technology

301 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.

teaser image

Analysis & Opinions - Belfer Center for Science and International Affairs, Harvard Kennedy School

Center Experts Reflect on 75th Anniversary of Hiroshima Bombing

On August 6, 1945, the United States dropped an atomic bomb on Hiroshima, Japan, launching the nuclear age. On the 75th anniversary of that somber event, Belfer Center experts reflect on the event and its aftermath. 

Dave Johnson coal-fired power plant is silhouetted against the morning sun

AP/J. David Ake

Magazine Article - Fair Observer

Sacrificing Nature Is Not an Option

    Author:
  • Kourosh Ziabari
| Feb. 27, 2019

In this edition of "The Interview," Fair Observer talks to Professor John Holdren, former science adviser to President Barack Obama and director of the White House Office of Science and Technology Policy from 2009 to 2017 about the impacts of global warming on the United States and the government's strategies to combat climate change.

Journal Article - Quarterly Journal: International Security

Correspondence: New Era or New Error? Technology and the Future of Deterrence

    Authors:
  • Ryan Snyder
  • Benoît Pelopidas
  • Keir A. Lieber
  • Daryl Press
| Winter 2018/19

Ryan Snyder and Benoît Pelopidas respond to Keir A. Lieber and Daryl G. Press's spring 2017 article, “The New Era of Counterforce: Technological Change and the Future of Nuclear Deterrence.”

Image of China’s People’s Liberation Army Rocket Force drill with a ballistic missile launcher

(China Military / 81.cn)

Policy Brief - Quarterly Journal: International Security

Inadvertent Escalation and the Entanglement of Nuclear Command-and-Control Capabilities

    Author:
  • James Acton
| Oct. 29, 2018

The risks of nuclear escalation between the U.S. and China or Russia are greater than ever given the possibility of misinterpreted cyber espionage and military strikes against early warning systems. What can be done to reduce this risk?

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.

Journal Article - Bulletin of the Atomic Scientists

New Ways to Detect Nuclear Misbehavior

| Jan. 08, 2018

If we had the technology to detect nuclear materials remotely it could help deter smuggling and make it easier to monitor international nuclear agreements. Several recent breakthroughs, if followed up with continued research and funding, could deliver on this promise. They include technological advances in x-ray and neutron radiography; a method that measures how plasma breaks down when exposed to a radioactive source; and developments in antineutrino detection. While all require more development and testing, they are important steps as the global need for ways to detect nuclear materials grows.