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Hello. I have an old set of Harman Kardon HK 595 computer speakers. I do not have the original mains lead for these speakers, and would like to choose a correctly rated fuse. Harman Kardon were not able to provide an answer, since the speakers were manufactured by Dell. The manual states the...

Perturbations in Earth's orbit due to the gravitational pull of other planets resulted in temperature changes. These changes in temperature were then amplified by the feedback of greenhouse gases like carbon dioxide. "Understanding and Responding to Climate Change."...

Of course, statistics can be manipulated, and scientists would prefer to have more data to work with. The point I'd make is that the theory of human-induced climate change is not solely based on statistics. It is based principally on an understanding of the physical processes at work in the...

CFCs are very strong greenhouse gas relative to carbon dioxide, of that there is no doubt. This is hardly the complete picture, however. You need to calculate the radiative forcing associated with these gases (IPCC report): You mention that NASA satellite observations show a cooling...

What's wrong with starting at 1900? What scale do you think would be more appropriate? I'm not sure what you mean. If you mean the drop towards the end of the observed temperature record, I don't think it's important. On decadal timescales, a large amount of unforced internal climate...

I've looked at Christopher Brooker's article, it's nonsense. Temperatures are rising, see the IPCC report. If you don't believe the IPCC report, visit*: The NCAR website: http://www.ncar.ucar.edu/research/climate/ The NASA GISS website: http://data.giss.nasa.gov/gistemp/2008/ The Hadley...

In my view, the Waxman-Markey Bill makes global action on climate change more - rather than less – likely, and for that reason I think it should be supported. Even without a global cap on emissions, other countries, such as India and China, are attempting to reduce their emissions: '[...]...

As you say, dirty air – sulfate aerosols, black carbon etc. – are thought to have offset some of the warming of greenhouse gases. You can view this as a good thing, but this pollution is cause of human health problems. This is particularly true in India and China. In my opinion, geoengineering...

It's true that the Earth's climate has shown large variations in the past without the influence of human beings. This fact, however, does not disprove the existence of human-induced climate change. Indeed, climate scientists who believe that human activities are altering the climate assess...

The 'doom and gloom scenarios' I citied are consistent with what's in the peer-reviewed IPCC report. The 'greenhouse gamble' wheel is from a recent 2009 MIT Global Change Program study. Its findings are similar to a 2008 study done by the Hadley Centre (1). As regards the Waxman-Markey Bill...

(1) It's called climate change because increases in global mean temperature result in changes to the climate system. This covers a wider range of effects than just temperature. To name a few examples, the effect of a higher global mean temperature: - increases the risk of extreme weather...

Carbon dioxide's heat-trapping properties have been known since the 19th century. To claim that current warming is a natural trend requires scientific evidence. The preponderance of evidence points to current warming being due to increased atmospheric greenhouse gas concentrations. This is...

Sea levels are rising, but you can hide this fact by misrepresenting the data (1). A common way of doing this is to look at noisy data over short time periods (e.g., the red bar in the diagram below). By doing this, it is possible to identify any trend you like...

In my view it's a question of values. If you place a high value on the impacts of climate change, then inevitably you will want to minimise the risk of those impacts occuring. One the other hand, if you place a high value on the risk of negative economic consequences of mitigation, then you will...

You say the Bill is unaffordable, but I think this is open to dispute (1). I accept that climate change mitigation could have unforeseen and potentially negative consequences. This has to be balanced against the potential benefits of acting. In my view, there is justification for mitigating the...

I think the quote below sums up the problem: We are so far removed from the scale of the problem and we are so reluctant, all of us, to address this because it affects us personally, it affects our economy, the way we live our lives, our attitude towards other people, that at every level we...

I've been listening to Tchaikovsky's complete score for the ballet, The Sleeping Beauty. I taped a performance of it from last year's BBC Proms. It was performed by Valery Gergiev and the London Symphony Orchestra. At this year's Proms, the LSO and Gergiev will be performing Shostakovich's 8th...

There was a podcast I listened to a while ago on the economic downturn. It was argued that government spending is necessary during economic downturns. The economist on the podcast also said that if markets are left to themselves, they have a tendency to undergo severe changes which can be...

You can even end up getting less performance for more money. I remember an old Audio Critic issue which looked at an expensive CD player/DAC. It had been badly designed. If I remember correctly, it had a gradual (i.e., not sharp, like most CD players) FR roll-off towards 20 kHz.

It's hard to think of any must see films I know of that aren't well known, so I'll mention some films that are fairly well-known: Death in Venice Three Colours trilogy King of the Hill Broken Flowers The films below I've only seen once so I don't really know how much I like them: A...