American high speed rail debacle. Is it because of vigorous Democracy or Political Gridlock and lost ability to build big things

Megan McArdle tries to put a positive spin on America’s failure and bleak future in regards to high speed rail. Viewed from a purely technological perspective, America’s high speed rail is an embarrassment compared to China’s: shaky, slow, and not particularly sleek. But viewed in another way, our slow rail network is the price for …

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Nuclear commercial ships on specific trade routes will be here sooner than expected

“We will see nuclear ships on specific trade routes sooner than many people currently anticipate,” said Lloyd’s Register CEO Richard Sadler. The organisation has been an independent service provider to the shipping industry for 250 years. There is the potential for market-based measures for controlling carbon dioxide emissions, while the entry into force of strict …

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The Microwave Thermal Thruster and its Application to The Launch Problem

PHD Thesis – The Microwave Thermal Thruster and its Application to The Launch Problem by Kevin Parkin (2006) The full pdf is here (38.5 Megabytes) Nuclear thermal thrusters long ago bypassed the 50-year-old specific impulse (Isp) limitation of conventional thrusters, using nuclear powered heat exchangers in place of conventional combustion to heat a hydrogen propellant. …

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David Leblanc explains why Thorium reactors need a lot less fissile nuclear material to start and for ongoing operation

Joseph Friedlander asked David LeBlanc about the starting fissile requirement for Thorium nuclear reactors. David Le Blanc, Physics Dept, Carleton University, Ottawa, Canada and Ottawa Valley Research Associates Ltd A 12 page paper by David LeBlanc , Denatured Molten Salt Reactors (DMSR): An Idea Whose Time Has Finally Come? Take 1970s technology, add perhaps $3 …

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About 26,000 dams in the US pose a high or significant hazard to life and property if a failure occurs

Of the more than 80,000 dams in the U.S., about a third pose a “high” or “significant” hazard to life and property if a failure occurs, according to the Federal Emergency Management Agency (FEMA). The dam safety community has made a giant leap in its efficiency and effectiveness, with the implementation of Potential Failure Mode …

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Techonomy – a Conversation With David Gelertner

David Gelertner was writing about the concept of Lifestreams back in 1995 and 1996 and predicted the modern internet in the book Mirror Worlds in 1991. A lifestream is a time-ordered stream of documents that functions as a diary of your electronic life; every document you create and every document other people send you is …

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Techonomy – Moving from an Oil based to Bio-based Society

Bio-based Society Speaker: Steen Riisgaard, Novozymes A/S Joined by: Steve Jurvetson, Draper Fisher Jurvetson Steen Riisgaard- A lot of the worlds products is based upon cheap oil. We need to replace oil at its low price but without its high cost. Projection of $232 billion biofuel and bioproducts industry in 2020. First we need to …

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Techonomy – Reinventing Fire: How business can lead us beyond fossil fuels

Reinventing Fire: How business can lead us beyond fossil fuels Presentation by: Amory Lovins, Rocky Mountain Institute Joined by: John McDonald, Chevron Moderator: Peter Petre Need to look not just as technology and policy but also design and strategy. Shifting of peak oil from supply to demand Winning the oil endgame – (2004) elimate oil …

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