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You can find the current article at its original source at https://www.theguardian.com/environment/live/2017/jan/19/global-warning-live-from-the-climate-change-frontline-as-trump-becomes-president
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Global warning: everything you wanted to know about climate change – live | Global warning: everything you wanted to know about climate change – live |
(35 minutes later) | |
1.44pm GMT | |
13:44 | |
On Twitter, @FourTwoThreeOne asks: | |
@dpcarrington Hi Damian, how bad (& how soon) will climate change Australia? A country which already has wild weather and long droughts. | |
Right here, right now is the answer. Scorching heatwaves are already five times more likely thanks to global warming and it’s not going to get better until carbon emissions start to fall. You can read more here. | |
1.40pm GMT | |
13:40 | |
Damian Carrington | |
MercuryBen asks a political question. | |
Why is it that climate change scepticism is so popular with those on the right-wing? | |
I’d suggest two reasons. First is that tackling global warming requires communal action, which for those libertarians far to the right looks just like communism. Communism is evil, therefore climate change can’t exist. | |
The second reason is that the fossil fuel lobby gives far more money to rightwing politicians, as they are seen to be more “pro-business” than those on the left. | |
But as the Tory politician John Gummer, now Lord Deben, argues today: “Conservatives cannot properly be climate deniers. At the heart of their political stance is a desire to hand on something better to the future than they have received from the past.” | |
1.34pm GMT | |
13:34 | |
Damian Carrington | |
ID5865653 asks an important question about whether aviation can be made greener. | |
Does anyone know what, if any, progress is being made on making flights more carbon neutral? I know there was a successful round-the-world solar flight in 2016, but that doesn’t seem likely to bear fruit commercially any time time soon. Are the fuel requirements just too large for electric planes etc to be practical? | |
Flying does have a heavy carbon footprint – about 1 tonne for every economy passenger from London to New York and back. But I don’t think electric planes – like Solar Impulse – will ever carry many passengers. Batteries are just too heavy and solar panels need too much area. | |
More likely is the adoption of a sustainable biofuel for jets, perhaps from algae, jatropha or even tobacco. But progress has been slow. For freight at least, air ships are a possible future alternative. For now, using a good carbon offset scheme is the only solution. | |
1.28pm GMT | |
13:28 | |
Damian Carrington | |
The livestock industry causes about 15% of all greenhouse gas emissions, and CordTrousers asks: | |
Any suggestions other than vegetarianism? | |
Meat does have a heavy carbon (and methane) footprint, but not all meat is equal. Beef has by far the biggest footprint, so cutting out that alone makes a big difference. Reducing meat consumption, rather than going vegetarian, is also an option backed by many, dubbed climatarian or reducatarian. | |
As it happens, lots of people in rich nations eat more meat than is healthy, so cutting back would help lengthen many lives. Also, lots of new companies are starting to produce vegetable-based substitutes for meat and dairy products, aiming to make them as tasty, healthy and affordable as the originals. | |
1.23pm GMT | |
13:23 | |
Damian Carrington | |
PeppermintSeal wants to know what the impact of ocean acidification might be. Much of the world’s CO2 emissions end up being absorbed by the oceans, which become more acidic as a result. | |
Regarding the increased acidity in the oceans, what follows from this? More coastal erosion and threat to sea life I’m guessing, but are there other things happening? Does acidity affect salt levels? | |
Ocean acidification is real but research is still ongoing. This is from a UK research programme: “Already ocean pH has decreased by about 30% and if we continue emitting CO2 at the same rate by 2100 ocean acidity will increase by about 150%, a rate that has not been experienced for at least 400,000 years. Such a monumental alteration in basic ocean chemistry is likely to have wide implications for ocean life, especially for those organisms that require calcium carbonate to build shells or skeletons.” | |
I think acidification is unlikely to affect salinity or coastal erosion. But rising sea levels and fiercer storms will affect coastlines. | |
Updated | |
at 1.39pm GMT | |
1.20pm GMT | |
13:20 | |
Damian Carrington | |
Lots of commenters, for example greensocialist147, are arguing that overpopulation is the fundamental problem. | |
The world’s population is set to rise to 9 or 10 billion by 2050, which definitely makes beating climate change tougher. But the critical thing is the size of their carbon footprints. | |
If they all cause the same emissions as today’s Americans or Australians, we are doomed to catastrophic climate change. But if, as is difficult but possible, emissions from energy, transport and buildings are reduced to very low levels, then a large global population can live sustainably on the planet. In terms of curbing population growth, poverty reduction, education for girls and availability of contraception for those who want it are vital. | |
1.17pm GMT | |
13:17 | |
Damian Carrington | |
Crucial question next from yourcomment. | |
Is it compulsory for every article on global warming to feature a photo of a polar bear? Why? | |
Well, no. But they are beautiful animals and the Arctic is warming far faster than the rest of the planet. But the research here suggests, among many things, that images of real people are effective ways to communicate the significance of climate change, too. | |
1.15pm GMT | |
13:15 | |
Damian Carrington | |
Reader rokealy wants to know how climate change will affect the UK and Europe. | |
This is such an important matter and delighted that you are covering this in such an excellent way. Really educational yet at the same time quite unsettling. With the rise in temperatures, and various reports coming to conclusions that Europe will get warmer or colder, can you give a clearer picture of what we (Ireland, UK, Europe) can expect to see in our climate in the near future? | |
The short answer is: more extremes. With more heat in the atmosphere, there’s more energy to drive more extreme events, such as storms. In the UK, the main consequences are more severe flooding and more deadly heatwaves, which the government’s official advisers, the Committee on Climate Change, say are high risks already. Summers are likely to get drier and hotter overall and winters warmer and wetter. But there will also be extreme cold snaps, probably driven by the fast-melting ice in the Arctic. | |
1.09pm GMT | 1.09pm GMT |
13:09 | 13:09 |
Damian Carrington | Damian Carrington |
Next up is a question from Clare Rudkin, on whether global warming can be blamed for specific events. | Next up is a question from Clare Rudkin, on whether global warming can be blamed for specific events. |
I would like to know the percent of increase in likelihood of events that seem to be linked to climate change. | I would like to know the percent of increase in likelihood of events that seem to be linked to climate change. |
Weather has a lot of natural variability, but climate changes increases the chances of many types of extreme weather – loading the dice, if you like. Scientists are getting better and faster at calculating how much the probability of heatwaves etc occurring are increased by global warming. | Weather has a lot of natural variability, but climate changes increases the chances of many types of extreme weather – loading the dice, if you like. Scientists are getting better and faster at calculating how much the probability of heatwaves etc occurring are increased by global warming. |
In some cases, it’s a lot. Warm sea temperatures linked to severe bleaching of the Great Barrier Reef were made at least 175 times more likely, the extreme Russian heatwave of 2010 was made three times more likely, major floods in Paris in 2016 were made almost twice as likely. | |
Updated | |
at 1.10pm GMT | |
1.03pm GMT | 1.03pm GMT |
13:03 | 13:03 |
Damian Carrington | Damian Carrington |
Hi! I’m Damian Carrington, head of environment at the Guardian, and I’ll be tackling your climate questions for the next 45 minutes or so. Please post anything you’d like to ask in the comments below or tweet me @dpcarrington. | Hi! I’m Damian Carrington, head of environment at the Guardian, and I’ll be tackling your climate questions for the next 45 minutes or so. Please post anything you’d like to ask in the comments below or tweet me @dpcarrington. |
Here’s the first one, from Sandie Elsom. | Here’s the first one, from Sandie Elsom. |
Congratulations on deciding to focus on this most important of all issues. I’d like to see clear explanations of what the science is saying and just how serious the outcomes will be. I have difficulty convincing family members that climate change is a clear and present danger. | Congratulations on deciding to focus on this most important of all issues. I’d like to see clear explanations of what the science is saying and just how serious the outcomes will be. I have difficulty convincing family members that climate change is a clear and present danger. |
These webpages by Nasa are very good: clear and striking. You could also take a look at the assessment of the world’s scientists produced by the Intergovernmental Panel on Climate Change. It concludes that global warming is set to inflict “severe, widespread, and irreversible impacts” on people and the natural world unless carbon emissions are cut sharply and rapidly. | These webpages by Nasa are very good: clear and striking. You could also take a look at the assessment of the world’s scientists produced by the Intergovernmental Panel on Climate Change. It concludes that global warming is set to inflict “severe, widespread, and irreversible impacts” on people and the natural world unless carbon emissions are cut sharply and rapidly. |
The assessment involved thousands of scientists – probably the biggest scientific review in human history – and was approved by 196 nations, making it as definitive as it gets. | The assessment involved thousands of scientists – probably the biggest scientific review in human history – and was approved by 196 nations, making it as definitive as it gets. |
12.56pm GMT | 12.56pm GMT |
12:56 | 12:56 |
HOUR SIX: saviour tech | |
Mark Rice-Oxley | Mark Rice-Oxley |
Journalism often tends to focus on the problems, and as such can often give a glum view of the world. But during this hour we’ve heard from: | Journalism often tends to focus on the problems, and as such can often give a glum view of the world. But during this hour we’ve heard from: |
The Egyptian hydroponics farmer trying to beat the drought | The Egyptian hydroponics farmer trying to beat the drought |
the team at the Thames Barrier in London, the kind of tech that might be needed elsewhere in the world | the team at the Thames Barrier in London, the kind of tech that might be needed elsewhere in the world |
the British Antarctic Survey, keeping tabs on climate change at the bottom of the earth | the British Antarctic Survey, keeping tabs on climate change at the bottom of the earth |
some of the innovators offering 21st-century ideas to fix a 21st-century problem | some of the innovators offering 21st-century ideas to fix a 21st-century problem |
Soon we’re going to hand over to Damian Carrington, our head of environment, to answer your questions. But before we go, can I make a personal plea for you to consider joining us as a member? Journalism is a costly business, as I’m sure you can appreciate from the work that has gone into this product. But we do it because we believe things like this can make a difference, can help build the movement to roll back climate change. If everyone reading this blog gave just a small amount, we would be on a far firmer footing to keep producing work like this. | Soon we’re going to hand over to Damian Carrington, our head of environment, to answer your questions. But before we go, can I make a personal plea for you to consider joining us as a member? Journalism is a costly business, as I’m sure you can appreciate from the work that has gone into this product. But we do it because we believe things like this can make a difference, can help build the movement to roll back climate change. If everyone reading this blog gave just a small amount, we would be on a far firmer footing to keep producing work like this. |
Support us with a monthly payment or a one-off contribution. Many thanks everyone. Here’s the hourly Twitter card: | Support us with a monthly payment or a one-off contribution. Many thanks everyone. Here’s the hourly Twitter card: |
Updated | |
at 1.40pm GMT | |
12.55pm GMT | 12.55pm GMT |
12:55 | 12:55 |
Damian Carrington | Damian Carrington |
When it comes to green tech, the electricity sector has seen the biggest focus so far, with the cost of solar, wind, LED lighting and batteries plummeting in the last decade. The cost of conventional nuclear power has not, but so-called “small modular reactors” (SMR) are now attracting a lot of attention: smaller, cheaper and mass produced is the promise. | When it comes to green tech, the electricity sector has seen the biggest focus so far, with the cost of solar, wind, LED lighting and batteries plummeting in the last decade. The cost of conventional nuclear power has not, but so-called “small modular reactors” (SMR) are now attracting a lot of attention: smaller, cheaper and mass produced is the promise. |
An SMR design was recently submitted to regulators in the US, but Tom Delay, chief executive of the Carbon Trust, is not holding his breath. “I do laugh when people talk about SMRs being five years around the corner. The licensing conditions for nuclear – quite correctly – imply a very slow development process because you can’t mess around with it.” | An SMR design was recently submitted to regulators in the US, but Tom Delay, chief executive of the Carbon Trust, is not holding his breath. “I do laugh when people talk about SMRs being five years around the corner. The licensing conditions for nuclear – quite correctly – imply a very slow development process because you can’t mess around with it.” |
The great hope for nuclear for decades has been nuclear fusion, which carries the prospect of cleaner and limitless energy. However, even those building the biggest fusion experiment in the world – ITER in France – acknowledge that commercial nuclear fusion will not come before 2050, by which time global emissions will already have to be near zero. | The great hope for nuclear for decades has been nuclear fusion, which carries the prospect of cleaner and limitless energy. However, even those building the biggest fusion experiment in the world – ITER in France – acknowledge that commercial nuclear fusion will not come before 2050, by which time global emissions will already have to be near zero. |
Much faster to deliver will be smart grids, which apply data and communication software to make far more efficient use of existing electricity, creating in effect “virtual power stations”. These, along with storage of intermittent renewable energy, are the most important technologies, say experts, allowing countries to move to 100% renewable energy on the grid. Big batteries are already replacing power plants in California. | Much faster to deliver will be smart grids, which apply data and communication software to make far more efficient use of existing electricity, creating in effect “virtual power stations”. These, along with storage of intermittent renewable energy, are the most important technologies, say experts, allowing countries to move to 100% renewable energy on the grid. Big batteries are already replacing power plants in California. |
A breakthrough in battery chemistry to deliver cheaper, more powerful devices is being sought around the world but they are not the only way to store energy – a plant in the UK is already using air compressed into a liquid. | A breakthrough in battery chemistry to deliver cheaper, more powerful devices is being sought around the world but they are not the only way to store energy – a plant in the UK is already using air compressed into a liquid. |
New renewable technologies are also being investigated. Researchers are seeking breakthroughs in solar energy, a truly global energy source, aiming to make panels that capture even more of the sun by, for example, using perovskite crystals instead of silicon. | New renewable technologies are also being investigated. Researchers are seeking breakthroughs in solar energy, a truly global energy source, aiming to make panels that capture even more of the sun by, for example, using perovskite crystals instead of silicon. |
Updated | Updated |
at 12.57pm GMT | at 12.57pm GMT |