Very interesting backgrounder on Stephen Salter, the British scientist who, in the course of trying to turn ocean waves into electric power, discovered a potential way to prevent, or at least limit, the impact of hurricanes:
Devastating tropical storms of the kind that battered the U.S. last week could be weakened and rendered less deadly using a simple and cheap technology based on a surprising component – old car tyres.
One of Britain’s leading marine engineers, Stephen Salter, emeritus professor of engineering design at Edinburgh university and a global pioneer of wave power research, has patented with Microsoft billionaires Bill Gates and Nathan Myhrvold the idea of using thousands of tyres lashed together to support giant plastic tubes which extend 100m deep into the ocean.
Wave action on the ocean surface would force warm surface water down into the deeper ocean. If non-return valves were used, he says, the result would be to mix the waters and cool the surface temperature of the ocean to under 26.5C, the critical temperature at which hurricanes form.
Season 3, Episode 3
Until not so long ago, chicken feet were essentially waste material. Now they provide enough money to keep U.S. chicken producers in the black — by exporting 300,000 metric tons of chicken “paws” to China and Hong Kong each year. In the first part of this hour-long episode of Freakonomics Radio, host Stephen Dubner explores this and other examples of weird recycling. We hear the story of a Cleveland non-profit called MedWish, which ships unused or outdated hospital equipment to hospitals in poor countries around the world. We also hear Intellectual Ventures founder Nathan Myhrvold describe a new nuclear-power reactor that runs on radioactive waste. Read More »
Michael Specter has written a good and interesting New Yorker article about the history and current state of geoengineering, called “The Climate Fixers: Is There a Technological Solution to Global Warming?”
Let me rephrase:
Michael Specter has written a good and interesting New Yorker article about the history and current state of geoengineering, called “The Climate Fixers: Is There a Technological Solution to Global Warming?,” which is essentially a New Yorkerized version of Chapter 5 of SuperFreakonomics, all the way down to the Mount Pinatubo explosion and the reliance on scientists Ken Caldeira and Nathan Myhrvold. Read More »
Yes! That’s the argument in a new Historical Biology paper called “A Call to Search for Fossilized Gastric Pellets.” Here’s the abstract:
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Numerous extant carnivorous, piscivorous and insectivorous species – including birds, pinnipeds, varanid lizards and crocodiles and mammals – routinely ingest food combined with a high proportion of indigestible material that can be neither absorbed through digestion nor eliminated as faecal matter. Their solution is to egest the indigestible portion through the mouth as a gastric pellet. The status of gastric pellets in extant species is reviewed. Arguments based on phylogeny, anatomy and biomechanics strongly suggest that many extinct species, including crocodilians and pterosaurs, may also have produced gastric pellets routinely.
Parts of the East Coast are still recovering from the destruction of Hurricane Irene. The storm wreaked havoc, causing more than 40 deaths and billions of dollars in damages. One thing that is striking about hurricanes is that, even after years of study, all we really know how to do is deal with the symptoms; we don’t actually have a way to treat the disease itself.
So what if there were a hurricane “vaccine”? Read More »
The more time you spend talking with smart people about the energy future, the more you hear about the holy grail: great batteries. To that end, a couple of recent developments in BatteryLand are encouraging news. The first battery of interest comes from MIT:
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A radically new approach to the design of batteries, developed by researchers at MIT, could provide a lightweight and inexpensive alternative to existing batteries for electric vehicles and the power grid. The technology could even make “refueling” such batteries as quick and easy as pumping gas into a conventional car. The new battery relies on an innovative architecture called a semi-solid flow cell, in which solid particles are suspended in a carrier liquid and pumped through the system. In this design, the battery’s active components — the positive and negative electrodes, or cathodes and anodes — are composed of particles suspended in a liquid electrolyte. These two different suspensions are pumped through systems separated by a filter, such as a thin porous membrane.