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The problem with using biofuels in aviation.

July 31, 2016 — leslie dean brown

Recently on LinkedIn:

First, it’s a premise of sustainable, alternative fuels that their production actually draws down atmospheric carbon–the carbon comes out of the atmosphere to make the fuel. The carbon is released again when the fuel is burned. By (albeit partial and imperfect so far) application of that principle, vastly lower net emissions (on the basis of life cycle analysis) are now possible.

I understand all abot life-cycle assessment. Yes, true, biofuel crops do take CO2 out of the air.

But not if brazilian rainforest has to be cut down to make way for new plantation crops — because the native forest already does a way better job of taking CO2 out of the air than a crop with less biodiversity ever will.

So my question is: where are we going to grow all of the new crops that will be needed for this additional biofuel?

It’s no good saying that new sustainable crops will reduce the CO2 from the air if you harvest the whole thing every year and burn it again. That only releases the same carbon that was absorbed by the crop in the first place… so no net CO2 increase. (well that is probably an over-simplification, because some carbon dioxide no doubt goes in to the soil) [Read more…]

On cyborg technology | Brain Computer Interface (BCI)

June 6, 2016 — leslie dean brown

Sometimes I wonder: what is the future going to look like in 100 years? 1000? 10,000?

If you look around, people everywhere are completely addicted to technology. When was the last time you saw somebody on the train without something stuck in their ears?

These days, people want quicker answers, more content, more choice. They think faster than they can physically type (or even speak).

If you extrapolate this, I predict that technology that removes the interface between the brain and the computer will be the next big thing (unfortunately). And I humbly predict that the next trillionaire might just be the person who invents that device and brings it to the masses. I would now like to say a big “fuck you” to that person, before they even get started on the project. Why?

I think the Brain Computer Interface (BCI) is going to make the world look like a very different place than it is now. In the past, I used to think that it would never happen, because the human brain is too complex. But after only a few decades I have changed my mind. I think that the idea is not too far from reality.

It won’t be like it is now, with thinner and thinner screens and faster and faster processors. The whole point of a BCI is that there won’t be a physical user interface. [Read more…]

The scientific case for urgent action to limit climate change

May 26, 2016 — leslie dean brown

Can journalists stop using the term “dole bludgers” please?

May 23, 2016 — leslie dean brown

I wasn’t planning on writing about personal issues on this blog, but I couldn’t help notice the headlines in the paper a few weeks ago…

I resent the term “dole bludger” being thrown around willy-nilly. I’m talking about this article, which appeared last month as a front page news headline. Really, this is not at all a politically correct phrase. It’s *absolutely* derogatory and offensive and I begin to fume with anger whenever I see supposedly “unbiased journalism” articles continually referring to this terminology in national papers such as the Telegraph and the Herald.

This is not a term that should be thrown around lightly. It’s *not* the 1980’s anymore. Since when did this term become acceptable to use in the national media?

I think this is a sorely outdated term and it *completely* isolates & alienates the thousands of people on legitimate welfare who ARE genuinely trying to seek employment (or self-employment). [Read more…]

What this scientist thinks of NASA’s 2035 mission to Mars…

May 11, 2016 — leslie dean brown

The 2035 Mars space mission is said to cost an estimated US$1.5 trillion.

What are my thoughts on this? That sounds like an aweful lot of money to me — to keep four to six people alive on another planet— in my view it’s money that could be put to far better things, like keeping 7 or 8 billion alive on this one.

To put things into perspective, it’s the equivalent of spending 94% of Australia’s Gross Domestic Product… for what? A dozen or so people to have the trip of a lifetime… at the most? That’s one hell of an expensive postcard!

If I personally had US$1.5 trillion dollars to play with and I wanted to ENSURE the future surivial of the human race, why, do you know what I’d do? I’d buy up all the wilderness areas up in poorer countries. I’d abandon that silly space mission. That’s what I’d do. And this is coming from someone that liked reading Carl Sagan’s cosmos… [Read more…]