Robert Rosner

Articles by Robert Rosner

2 November 2017

In most countries, the challenge of balancing national energy needs against environmental constraints and climate change impacts is complicated by constraints on available energy resources and political tensions among stakeholders.

25 January 2017
AfricaAmericasAsiaEurope/RussiaMiddle East

It is 30 seconds closer to midnight

Lynn EdenRod EwingSivan KarthaHerbert LinSuzet McKinneySteven MillerRaymond T. PierrehumbertRamamurti RajaramanRobert RosnerJennifer SimsSusan SolomonRichard C. J. SomervilleSharon SquassoniDavid Titley

The full text of the Bulletin Science and Security Board 2017 Doomsday Clock statement, which moved the Clock to two and a half minutes to midnight.

2 January 2017

Using nuclear power to replace coal-based fossil fuel power plants worldwide by 2100 is within current international technical capabilities.

22 January 2016
AfricaAmericasAsiaEurope/RussiaMiddle East

It is still three minutes to midnight

Lynn EdenRobert RosnerRod EwingLawrence M. KraussSivan KarthaThomas R. PickeringRaymond T. PierrehumbertRamamurti RajaramanJennifer SimsRichard C. J. SomervilleSharon SquassoniDavid Titley

In keeping the hands of the Doomsday Clock at three minutes to midnight, the members of the Bulletin of the Atomic Scientists Science and Security Board mean to make a clear statement: The world situation remains highly threatening to humanity, and decisive action to reduce the danger posed by nuclear weapons and climate change is urgently required.

19 January 2015
AfricaAmericasAsiaEurope/RussiaMiddle East

Three minutes and counting

Lynn EdenRobert RosnerRod EwingSivan KarthaEdward "Rocky" Kolb Lawrence M. KraussLeon LedermanRaymond T. PierrehumbertM. V. RamanaJennifer SimsRichard C. J. SomervilleSharon SquassoniElizabeth J. WilsonDavid TitleyRamamurti Rajaraman

Today, more than 25 years after the end of the Cold War, the members of the Bulletin of the Atomic Scientists Science and Security Board have looked closely at the world situation and found it so threatening that the hands of the Doomsday Clock must once again be set at three minutes to midnight.

1 November 2014

Despite the recommendations of the 2012 Blue Ribbon Commission Report, the US government has made no substantial progress toward the permanent, or even temporary, consolidated storage of used civilian nuclear fuel.

13 January 2014
AfricaAmericasAsiaEurope/RussiaMiddle East

Five minutes is too close

Lawrence M. KraussLynn EdenRobert RosnerAlexander GlaserEdward "Rocky" Kolb Leon LedermanRamamurti RajaramanM. V. RamanaElizabeth J. WilsonRichard C. J. SomervilleSivan KarthaJennifer SimsRod Ewing

A careful review of threats leads the Bulletin's Science and Security Board to conclude that the risk of civilization-threatening technological catastrophe remains high, and that the hands of the Doomsday Clock should therefore remain at five minutes to midnight.

1 November 2013

Nuclear power continues to offer the potential to be a major, worldwide, scalable, carbon-free energy source—if the challenges of safety, nonproliferation, waste management, and economic competitiveness are addressed.

14 January 2013

An open letter to President Obama: The time on the Doomsday Clock is five minutes to midnight

Robert SocolowThomas RosenbaumLynn EdenRod EwingAlexander GlaserSivan KarthaEdward "Rocky" Kolb Leon LedermanRamamurti RajaramanM. V. RamanaRobert RosnerJennifer SimsRichard C. J. SomervilleElizabeth J. Wilson

Editor's note: Founded in 1945 by University of Chicago scientists who had helped develop the first atomic weapons in the Manhattan Project, the Bulletin of the Atomic Scientists subsequently created the Doomsday Clock in 1947 using the imagery of apocalypse (midnight) and the contemporary idiom of nuclear explosion (countdown to zero), to convey threats to humanity and the planet.

24 August 2011

Moving to passive designs

Robert RosnerRebecca LordanStephen Goldberg

For months, and perhaps years, lessons will be learned from the events at the Fukushima Daiichi nuclear power plant in Japan, which will serve as both a laboratory and a classroom. As the sequence of events leading to the accident continued through the accident response, at least one concept was made clear: When operating reactors, defense-in-depth -- the technical concept of multiple layers of safety backup systems -- must incorporate a series of active backup systems (meaning that they require human intervention) that must be operable to forestall single-point catastrophic failures.