Articles

364 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.

an operator inspects a photolithography tool used to manufacture these solar cells.

Daniel Derkacs/SolarJunction

Journal Article - Research Policy

Governments as Partners: The Role of Alliances in U.S. Cleantech Startup Innovation

Accelerating innovation in clean energy technologies is a policy priority for governments around the world aiming to mitigate climate change and to provide affordable energy. Most research has focused on the role of governments financing R&D and steering market demand, but there is a more limited understanding of the role of direct government interactions with startups across all sectors. The authors  propose and evaluate the value-creation mechanisms of network resources from different types of partners for startups, highlighting the unique resources of government partners for cleantech startups. 

petri dishes

AP/Federica Narancio

Journal Article - European Review

Human Heredity Now and in the Future

| February 2019

The distinctive human characteristic of curiosity, once liberated from belief in supernatural causes of natural phenomena, has led with increasing speed to the brink of a world in which humanity will increasingly direct its own genetic endowment, raising the question of what we most value in being human and how to keep faith with it.

Earthrise over the Moon

NASA/Bill Anders

Journal Article - Nature Sustainability

Policy Design for the Anthropocene

    Authors:
  • Thomas Sterner
  • Edward B. Barbier
  • Ian Bateman
  • Inge van den Bijgaart
  • Anne-Sophie Crépin
  • Ottmar Edenhofer
  • Carolyn Fischer
  • Wolfgang Habla
  • John Hassler
  • Olof Johansson-Stenman
  • Andreas Lange
  • Stephen Polasky
  • Johan Rockström
  • Henrik G. Smith
  • Will Steffen
  • James E. Wilen
  • Francisco Alpízar
  • Christian Azar
  • Donna Carless
  • Carlos Chávez
  • Jessica Coria
  • Gustav Engström
  • Sverker C. Jagers
  • Gunnar Köhlin
  • Åsa Löfgren
  • Håkan Pleijel
  • Amanda Robinson
| 2019

The authors examine the complexities of designing policies that can keep Earth within the biophysical limits favorable to human life.

The U.S. Capitol Building in Washington is shrouded in fog early in the morning Tuesday, Nov. 6, 2018 on Election Day in the U.S. (AP Photo/J. David Ake)

AP Photo/J. David Ake

Magazine Article - Politico Magazine

How A Divided Congress Could Unite Around Tech

| Dec. 06, 2018

Beyond tougher oversight hearings, somber observers expect so little from our newly divided Congress that we all ought to be on the lookout for nonpartisan opportunities.

There is one important area where members could defy partisan gridlock to help Washington better meet a critical challenge of 21st century governance: assessing the public impact of today’s disruptive technologies.

I have firsthand experience with a model that worked. It’s one that could work again for members and their staffs, who understandably struggle to grapple with the sheer complexity of today’s highly disruptive and socially consequential technologies.

Sunset on the Indian Ocean

NASA

Journal Article - Environmental Research Letters

Stratospheric Aerosol Injection Tactics and Costs in the First 15 Years of Deployment

| 2018

We review the capabilities and costs of various lofting methods intended to deliver sulfates into the lower stratosphere. We lay out a future solar geoengineering deployment scenario of halving the increase in anthropogenic radiative forcing beginning 15 years hence, by deploying material to altitudes as high as ~20 km. After surveying an exhaustive list of potential deployment techniques, we settle upon an aircraft-based delivery system. Unlike the one prior comprehensive study on the topic (McClellan et al 2012 Environ. Res. Lett. 7 034019), we conclude that no existing aircraft design—even with extensive modifications—can reasonably fulfill this mission. However, we also conclude that developing a new, purpose-built high-altitude tanker with substantial payload capabilities would neither be technologically difficult nor prohibitively expensive. We calculate early-year costs of ~$1500 ton−1 of material deployed, resulting in average costs of ~$2.25 billion yr−1 over the first 15 years of deployment. We further calculate the number of flights at ~4000 in year one, linearly increasing by ~4000 yr−1. We conclude by arguing that, while cheap, such an aircraft-based program would unlikely be a secret, given the need for thousands of flights annually by airliner-sized aircraft operating from an international array of bases.

Photo of Mark Zuckerberg preparing to resume testimony about user data on Facebook.

(AP Photo/Jacquelyn Martin)

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

America Needs to Align Technology with a Public Purpose

| Nov. 25, 2018

The arc of innovative progress has reached an inflection point, writes Ash Carter in The Atlantic. "Recent technological change that has brought immeasurable improvements to billions around the globe now threatens to overwhelm us. Making this disruption positive for all is the chief challenge of our time. We ourselves—not only market forces—should bend the arc of change toward human good. To do so, we must reinvigorate an ethos of public purpose that has become dangerously decoupled from many of today’s leading tech endeavors."