RIP Dr. Mackay. Thank you for all you did to help boost our climate and energy literacy.
@guess5who
14 жыл бұрын
I was lucky enough to hear David Mackay speak in Seattle - awesome. Entertaining, to the point, an important message. Read his book!
@ared-ainu
11 жыл бұрын
I understood that he was just saying they aren't allowed to build them. Or maybe I got that wrong. Actually, I liked the fact that he didn't say that a particular alternative power source is the one needed instead of fossil fuels, just that there has to be a change. That way he didn't put off the kind of people who think that everybody supporting renewable energy is a hippie. Although I might have misunderstood something, as I am not a native speaker.
@EquusFerrarius
12 жыл бұрын
The truth is we need a mixture of energy sources, 50% Nuclear and 50% Renewable seems to be a good target.
@EquusFerrarius
12 жыл бұрын
He isn't lying about anything, he is simply stating how much we currently use.
@midnighthorse1997
11 жыл бұрын
I disagree with him saying that people only doing a little won't help. If everybody set there thermostats to 17 degrees centigrade instead of 20 or even 22 degrees then that would make a difference. It's because only a few are doing a lot. What we need is for a lot to do a little!
@etbadaboum
13 жыл бұрын
Human innovation is the first renewable energy source.
@string22
12 жыл бұрын
davey mackay is a legend
@TheRealTrevorland
15 жыл бұрын
Very insightful perspective on the situation! Well done.
@cobrazax
11 жыл бұрын
SOMEONE NEEDS TO INVENT COLD FUSION NOW!
@EquusFerrarius
12 жыл бұрын
"There will never be the kind of nuclear build up he is recommending." Goodbye civilization, it was fun while it lasted.
@powpanda
15 жыл бұрын
I completely agree, all that stuff about unplugging phone chargers and TVs is twaddle. However, he talks about needed to cover half of britain wind turbines. There are plenty of uninhabited desert-type of sites around Europe that could be covered with wind/solar farms, and then they'd only need to be connected to Britain on the power grid.. Look at Australia for eg; we can power all the world with our desert surface area.
@willwadsworth267
12 жыл бұрын
Mackay encourages an attitude that "any actions I take as an individual are pointless": which is deeply unhelpful. If made a range of changes to my life - such as adopting best-practice insulation, getting rid of my hot-water tank, using a 300kg car, reducing set temperature of washing machines and dishwashers - I could save 73% of my personal energy use (Env Sci and Tech., DOI: 10.1021/es102641n). Even if the 73% figure is is an overestimate, these individual actions add up to many lightbulbs.
@fiable262626
15 жыл бұрын
Good video An interesting side note about indoor light bulbs is that although they are often slated as being very inefficient. The 'wasted' heat energy merely goes to heat the surroundings and hence reduces the amount of energy needed to heat the house and so isnt wasted as much. Im not too worried about the future of energy, as I get the feeling that these things seem to work themselves out - I could put backing and explanation to that but dont feel like writing an essay on utube :/.
@mattbiker419
15 жыл бұрын
i cant wait to go to cambridge university :)
@soylentgreenb
14 жыл бұрын
@actyogi "My personal usage is 0.65kw electricity and 0.27kw gas ." Most of your power consumption is indirect from your point of view; it is in the form of chickens, tables, street-lighting, petrol for the bus and so on.
@Zephyr1453
11 жыл бұрын
A very good take! He is recommending a mix of electrical energy generation types. Here we are with the lights in the UK about to either go out or to become very expensive to keep on. I first had an inkling that all was not well back in 1993 when the then Tory government began endorsing and actively encouraging the of gas turbines to generate electricity in place of existing coal fired powered electricity generating plants. You can read the rest of my article at bright-work.co.uk
@hecklennon8400
10 жыл бұрын
About wind/solar: Besides their very high cost in capital, by nature, they're intermittent. As long as we have no way to store massive amounts of electrons, wind/solar means gas/coal power plants to provide electricity most of the time when neither sun nor wind is available. See Germany, Denmark, or Spain for examples. As for nuclear: Good for base load, but not flexible enough to adapt to user demand in real time, so we need other sources of electricity: Hydro (for countries with mountains), or… nothing since we have to stop using fossil fuel. David MacKay does an extraordinary job keeping things rational.
@johnbenton4488
9 жыл бұрын
And then, when the world has no more oil?
@EquusFerrarius
12 жыл бұрын
It does when it causes famine and war, which it probably will. I'll stick to trying to find a solution I think, either that or build myself a bunker and learn how to hunt.
@bballbackus
14 жыл бұрын
Why didn't he mention solar energy?
@POsiris2000
15 жыл бұрын
There is no way we can replace energy obtained from gas and oil. Even after full life cycle solar batteries produse less energy that was wasted to produce them.
@l0rd0f0blivi0n
15 жыл бұрын
there is another featured video which is exactly the same as this.... don't exactly know why
@rubikfan1
8 жыл бұрын
we need to make a fusion reactor. that whould solve all our energy problems.
@leerman22
8 жыл бұрын
+rubikfan1 Not if it costs +10 times as much as a breeder reactor.
@rubikfan1
8 жыл бұрын
In the begin it will. But it will become cheaper when scaling. As the fual is almost free and unlimited. Also the garbage is helium and litium. Both can be sold for alot of money
@leerman22
8 жыл бұрын
rubikfan1 It will be a bit too late for it to stop global warming. And lithium is a fuel that must be bred into something useful (the tritium) just like in a breeder reactor, except that would be depleted uranium or thorium.
@ValMartinIreland
12 жыл бұрын
Ok: So we go for the wind option, 600,000 1.5 mw turbines. Then we decommission all our conventional and nuclear power stations, Happy Days. From the 15 th December 2009 to 21st January 2010 and from 2nd February to 27th February 2011 a blocking weather system happened in the eastern Atlantic which caused anti cyclonic calm conditions over Ireland and Britain. 3 out of four days in 2011 were too calm to generate wind power. So where is the power going to come from?
@9and10
11 жыл бұрын
We can talk about pressing global issues, without sinking into a soapy gloom of wishfull thinking and with actual suggestions, realistic approaches and facts? If only I would have known.
@DIY-DaddyO
8 жыл бұрын
why don't we import electricity from solar rich countries or build solar farms in other countries and "ship" it home?
@DIY-DaddyO
8 жыл бұрын
We will never solve our energy problems as long as we work as individuals and not as a united world.
@bencorgan
14 жыл бұрын
I've got three words: CARBON, CAPTURE & STORAGE
@Vorticistick
14 жыл бұрын
@italobambino43 He didn't mention recycling, and certainly replacing one of those lightbulbs with one that consumes only 25% of the energy does make a difference. Environmentalists are not standing in the way of a solution to this; they have a wider view of the damage to the environment, not just from AGW but also to habitat, health, and from nuclear pollution. Before jumping on the nukes bandwagon, think about eg Europe being powered via a cable to huge solar arrays in the Sahara. This works.
@actyogi
14 жыл бұрын
I think you have got the numbers wrong - which would not have happened if you had stuck to kw or kwh. in 2004 total uk electricity was 382 twh or about 0.6 kw per person. You say 6kw per person ( 125 bulbs ). I know that you have also counted gas & heating oil . My personal usage is 0.65kw electricity and 0.27kw gas . But My real point is that a kw of electricity is worth much more than a kw of gas. We run air-sourced heat pumps and get about 3kw out for each kw of electricity .
@robz40
10 жыл бұрын
Well... China opens 1~2 coal power stations every week (yes week) which means that in one year they install the equivalent of the entire UK electrical capacity installed in Britain in the space 100 year. in 2001 China had 700GWe of coal power stations operating against a TOTAL capacity (coal , gas, nuclear etc) of 80GWe installed in the UK. Sorry, nothing we can do will make shred of difference just hope that predictions on climate change are just wrong
@trinitrotuleneboom
15 жыл бұрын
We need to take action now! Recycle your waste, use energy efficient light bulbs, walk your way around, do all you can(the cash'll be great too)! In 40 or so years, your grandchildren will gaze upon our once beautiful forests and say "its your fault". They'll be right. p.s. for those of you who do care, i like you already.
@actyogi
14 жыл бұрын
IT needs about 40 nukes @ 1Gw to generate our 2004 electricity production - but u probably need 3x that to allow for peak loading. You would use some gas turbine / pumped storage to ameliorate the peaks .
@jimmyrich1
15 жыл бұрын
one thing that really angers me is how many shops leave lights on after hours! 24 hrs a day 7 days a week !!!!! what a joke that they are aloud to do this
@fleetwoodsucks
15 жыл бұрын
Not even in our children children's lifetimes
@Azrudi
14 жыл бұрын
@powpanda If all you read on German, Russian and Swedish forums are "We can power the entire Europe by covering Great Britain with solar panels and wind turbines", how would you respond?
@hughesa827
15 жыл бұрын
I don't get it, you want to make a point to the country maybe even world. Yet there's only 127 views on this video, ok so its been up 1 or 2 days but still. Why not ask KZitem to put it on the front page for a week, or on google video. I found it really interesting :)
@benjyboba
15 жыл бұрын
There is also so many other forms of energy possible and not to mention much more efficient designs. There isn't much we can't techoloically manage with todays true techologies but the only thing that prevents anything happening is buiessness, Does it make money ?. besides wind, we have geothermal, hydroelectric, solar and many more. Not to mention how more efficient each can become. This earth can produce enough energy for the world is people cared more for the world than ruling and money.
@fanthomans2
11 жыл бұрын
Note, no talk about global climate change in this video. That must be because it is not the problem!!! The problem is we are running out of fossil fuels.
@deviljamez
15 жыл бұрын
im off tesco to get 10 more light bulbs :D
@CUMBICA1970
8 жыл бұрын
5:55 "...600,000 wind turbines, which would cover half of Britain." LOL Yeah totally realistic.
@andymooseman
15 жыл бұрын
Why does nobody ever mention solar power? Fit all new homes with some solar panels. At least it's a start.
@fleetwoodsucks
15 жыл бұрын
Um no. Coal is everywhere.
@Poiuse321
15 жыл бұрын
In all honesty, wouldn't you say he is a little more educated on the subject than you are? These are people who have spent life work on this topic and you are just a person who believes it's all a lie because you seen a video on youtube. Give the scientists some credit, they know what they are talking about.
@CONANLI12
14 жыл бұрын
@thefrequencykenneth ...which reminds me of Monster Inc. lol
@etbadaboum
13 жыл бұрын
@jimmyrich1 20% of world electricity is consumed in lightning. 40% of food is wasted in the Western world. We can do better than that.
@adriananewsum760
8 жыл бұрын
yesterday we used 240v to power things, today many things could run from a 12 or 6v resource
@chapter4travels
8 жыл бұрын
+Adrian Newsum Absolutely, like steel mills and the chemical industry, .......oops
@Poiuse321
15 жыл бұрын
All this coming from the person who thinks this is a huge conspiracy and that we are getting brainswashed? If only there was a guffaw button ...
@fleetwoodsucks
15 жыл бұрын
run out of coal? lololol
@lukeclews
15 жыл бұрын
Only boring people get bored.
@alanwgraham1
15 жыл бұрын
far too simplistic - what about changing our life style!
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