147 Items

An F-35A Lightning II flies above the Mojave Desert

USAF/Public Domain

Analysis & Opinions - Bulletin of the Atomic Scientists

To Enhance National Security, the Biden Administration Will Have to Trim an Exorbitant Defense Wish List

| Mar. 13, 2024

David Kearn argues that even in the absence of restrictive resource and budgetary constraints, a focus on identifying and achieving concrete objectives that will position the United States and its allies to effectively deter aggression in critical regional flashpoints should be the priority given the stressed nature of the defense industrial base and the nuclear enterprise.

London Skyline and the Thames

Wikimedia CC/DAVID ILIFF

Journal Article - Water Science and Technology

Multi-objective Optimization of Energy and Greenhouse Gas Emissions in Water Pumping and Treatment

    Authors:
  • Iliana Cardenes
  • Mohammad Mortazavi Naeini
  • Jim W. Hall
| 2020

A large part of operating costs in urban water supply networks is usually due to energy use, mostly in the form of electricity consumption. There is growing pressure to reduce energy use to help save operational costs and reduce carbon emissions. This study shows how a hybrid linear and multi-objective optimization approach can be used to identify key energy consumption elements in a water supply system, and then evaluate the amount of investment needed to achieve significant operational gains at those points in the supply network.

Report - Global Efficiency Intelligence

Deep Decarbonization Roadmap for the Cement and Concrete Industries in California

| September 2019

Cement production is one of the most energy-intensive and highest carbon dioxide (CO2) emitting manufacturing processes. The goal of this study is to develop a roadmap for decarbonization of California's cement and concrete production. In this study, the authors look at the current status of cement and concrete production in California and develop scenarios up to 2040 to analyze different decarbonization levers that can help to reduce CO2 emissions of cement and concrete production in California.

A member of the Czech Army takes part in an anti-terrorism drill at the Temelin nuclear power plant near the town of Tyn nad Vltavou, Czech Republic, April 11, 2017.

REUTERS/David W. Cerny

Report - Belfer Center for Science and International Affairs, Harvard Kennedy School

Revitalizing Nuclear Security in an Era of Uncertainty

| January 2019

Nuclear security around the world has improved dramatically over the last three decades—which demonstrates that with focused leadership, major progress is possible. But important weaknesses remain, and the evolution of the threat remains unpredictable. The danger that terrorists could get and use a nuclear bomb, or sabotage a major nuclear facility, or spread dangerous radioactive material in a “dirty bomb,” remains too high. The United States and countries around the world need to join together and provide the leadership and resources needed to put global nuclear security on a sustained path of continuous improvement, in the never-ending search for excellence in performance.

Russian President Vladimir Putin speaks during his annual news conference in Moscow

AP/Alexander Zemlianichenko

Journal Article - Bulletin of the Atomic Scientists

How the Next Nuclear Arms Race Will Be Different from the Last One

| 2019

All the world's nuclear-armed states (except for North Korea) have begun modernizing and upgrading their arsenals, leading many observers to predict that the world is entering a new nuclear arms race. While that outcome is not yet inevitable, it is likely, and if it happens, the new nuclear arms race will be different and more dangerous than the one we remember. More nuclear-armed countries in total, and three competing great powers rather than two, will make the competition more complex. Meanwhile, new non-nuclear weapon technologies — such as ballistic missile defense, anti-satellite weapons, and precision-strike missile technology — will make nuclear deterrence relationships that were once somewhat stable less so.

Book - Georgetown University Press

India and Nuclear Asia: Forces, Doctrine, and Dangers

| November 2018

India's nuclear profile, doctrine, and practices have evolved rapidly since the country's nuclear breakout in 1998. However, the outside world's understanding of India's doctrinal debates, forward-looking strategy, and technical developments are still two decades behind the present. India and Nuclear Asia will fill that gap in our knowledge by focusing on the post-1998 evolution of Indian nuclear thought, its arsenal, the triangular rivalry with Pakistan and China, and New Delhi's nonproliferation policy approaches. The authors show how India's nuclear trajectory has evolved in response to domestic, regional, and global drivers.

Nov. 23, 2016, a train returns from transporting ballast used in the construction of the Nairobi-Mombasa railway

AP Photo/Ben Curtis

Discussion Paper - Belfer Center for Science and International Affairs, Harvard Kennedy School

African Regional Economic Integration

| Winter 2018

The power of Pan-Africanism as a guiding vision for the continent’s development is widely studied, mostly as an aspirational phenomenon. At worst, Pan-Africanism has often been seen as a poor imitation of American federalism or European integration. Both of these perceptions do not reflect the profound nature of the role that the ideology of Pan-Africanism played in shaping the continent’s economic transformation. 

A man is reflected in a glass as an electronic stock board shows the Hang Seng Index at a bank in Hong Kong, Friday, Sept. 22, 2017. Most Asian stock markets fell Friday as investors turned cautious following new U.S. sanctions targeting North Korea and a China credit rating downgrade.

(AP Photo/Kin Cheung)

Analysis & Opinions - Bulletin of the Atomic Scientists

Can Chinese banks identify North Korean sanctions evaders?

| Oct. 04, 2017

Last week, President Trump signed a new executive order that paves the way to impose sanctions against any foreign bank that conducts business with North Korea, going well beyond current UN financial sanctions. These so-called secondary sanctions, which are penalties applied to third-party foreign banks (i.e., not directly against North Korean entities), are particularly focused on Chinese banks.