Articles

89 Items

Workers shovel waste from a wheat farm into a prototype for a biomass machine

AP/Andy Wong

Journal Article - Proceedings of the National Academy of Sciences of the United States of America

Gasification of Coal and Biomass: A Net Carbon-Negative Power Source for Environment-Friendly Electricity Generation in China

    Authors:
  • Xi Lu
  • Liang Cao
  • Haikun Wang
  • Jia Xing
  • Shuxiao Wang
  • Siyi Cai
  • Bo Shen
  • Qing Yang
  • Chris P. Nielsen
  • Michael B. McElroy
| 2019

Deploying coal-bioenergy gasification systems with carbon capture and storage (CBECCS) provides a promising opportunity for China to realize its carbon mitigation and air pollution abatement goals simultaneously. The authors conducted a comprehensive assessment of CBECCS technology for China, with a focus on plant and fuel configurations (e.g., biomass ratios) and economics, as well as CO2 and greenhouse gas emissions and cobenefits for air quality.

rendering of Carbon Engineering’s air capture design

Courtesy of Carbon Engineering

Journal Article - Joule

A Process for Capturing CO2 from the Atmosphere

    Authors:
  • Geoffrey Holmes
  • David St. Angelo
  • Kenton Heidel
| 2018

The authors describe a process for capturing CO2 from the atmosphere in an industrial plant. The design captures ∼1 Mt-CO2/year in a continuous process using an aqueous KOH sorbent coupled to a calcium caustic recovery loop. They describe the design rationale, summarize performance of the major unit operations, and provide a capital cost breakdown developed with an independent consulting engineering firm. They report results from a pilot plant that provides data on performance of the major unit operations.

Iranian conservative lawmaker Bijan Nobaveh Vatan holds up a paper with writing in Persian reading, "Opponent of the JCPOA"

AP

Journal Article - Nonproliferation Review

Negotiating the "Iran Talks" in Tehran: The Iranian Drivers that Shaped the Joint Comprehensive Plan of Action

| Forthcoming

When Iran and the world powers resumed negotiations over Tehran's controversial nuclear program after a seven-year lull, Iran's hardline President Mahmoud Ahmadinejad was approaching the end of his second and last term. During that time, little progress was made. After the election of the moderate Hassan Rouhani to the presidency, the talks resumed decisively. Rouhani and his team were in an ideal position to strike a deal, as they were afforded cross-party support supplying them with political will and political capital.

Presidents Trump and Xi shake hands.

(AP Photo/Alex Brandon)

Magazine Article - The National Interest

How America and China Could Stumble to War

| Apr. 12, 2017

WAR BETWEEN the United States and China is not inevitable, writes Graham Allison, "but it is certainly possible. Indeed, as these scenarios illustrate, the underlying stress created by China’s disruptive rise creates conditions in which accidental, otherwise inconsequential events could trigger a large-scale conflict. That outcome is not preordained: out of the sixteen cases of Thucydides’s Trap over the last five hundred years, war was averted four times. But avoiding war will require statecraft as subtle as that of the British in dealing with a rising America a century ago, or the wise men that crafted a Cold War strategy to meet the Soviet Union’s surge without bombs or bullets. Whether Chinese and American leaders can rise to this challenge is an open question. What is certain is that the fate of the world rests upon the answer."

Journal Article - World Affairs

Was Ukraine's Nuclear Disarmament a Blunder?

| September 2016

"Ukraine's denuclearization had been a controversial issue even as it was negotiated, leaving bitter traces in the country's political and public discourse. As a student of political science in Kyiv in the mid-1990s, I remember being outraged by the sense of injustice: how could the states that rely on their own nuclear deterrents demand the nuclear disarmament of others? More so that one of these states, Russia, has never fully come to terms with Ukraine's independence. Since then, I came to research a doctoral dissertation on the denuclearization of post-Soviet successor states and, in the process, learned a great deal about Ukraine's nuclear disarmament that dispelled many of my preconceptions."

A rural stove using biomass cakes, fuelwood and trash as cooking fuel... It is a major source of air pollution in India, and produces smoke and numerous indoor air pollutants at concentrations 5 times higher than coal.

Wikipedia

Journal Article - Nature Energy

Energy decisions reframed as justice and ethical concerns

| 6 May 2016

Many energy consumers, and even analysts and policymakers, confront and frame energy and climate risks in a moral vacuum, rarely incorporating broader social justice concerns. Here, to remedy this gap, we investigate how concepts from justice and ethics can inform energy decision-making by reframing five energy problems — nuclear waste, involuntary resettlement, energy pollution, energy poverty and climate change — as pressing justice concerns.