Boris Johnson's climate change "scepticism" is an embarrassment to London's scientists

The Mayor's suggestion that we are heading for a "mini Ice Age"shows that he does not understand the basic science behind global warming.

Boris Johnson has become a real embarrassment to London's scientific community after his latest outburst of climate change ‘scepticism’, which exposes not just a glaring weakness in his own knowledge but also within his team of advisers.

On Monday, Johnson used his Telegraph column to muse on the global climatic implications of a few days of wintry weather in the UK in January. He concluded that it might be time for policy-makers to consider whether the earth is heading for a "mini Ice Age".

This is complete rubbish, of course, and shows not only that Johnson does not understand the basic science behind global warming but also that he cannot distinguish between anecdote and evidence, or between weather and climate.

Claiming to be "an empiricist", Johnson suggested that this is "the fifth year in a row that we have had an unusual amount of snow" and that "I don’t remember winters like this". Unfortunately, his commitment to observational analysis apparently does not extend to consulting the Met Office’s records, which would have shown him that although the average temperatures in the UK during winters 2008-09, 2009-10 and 2010-11 were below average, last winter was actually warmer than average, as were most winters since 2000.

Furthermore, he would have discovered that the UK’s climate bears the unmistakeable footprint of global warming, with the seven warmest years on record all occurring since 2000. So why does the Mayor claim we are experiencing global cooling?

Well, it seems that the only person Johnson consults on this issue is his friend Piers Corbyn, who rejects the overwhelming evidence that rising atmospheric levels of greenhouse gases is driving the unambiguous rise in global average temperatures, and instead holds the sun directly responsible for trends in the Earth’s climate.

The trouble with Dr Corbyn’s theory, which he has not published in any peer-reviewed scientific journal, is that it is not supported by evidence. He does not even believe that the earth’s climate is controlled by the amount of energy radiated from the sun, but instead blames its magnetic activity, which increases and decreases cyclically about every 11 years and so clearly cannot be the main driver of global warming.

Johnson’s description of Dr Corbyn’s theory is an almost verbatim reproduction from one of his earlier columns last July (clearly the £250,000 he is allegedly paid each year is not high enough to guarantee original content for its readers), and is punctuated with references to JMW Turner, Shakespeare and the Aztecs, but largely devoid of scientific insight.

This latest gaffe follows his decision last year to invite Matt Ridley, a prominent climate change ‘sceptic’ and former chairman of Northern Rock, to speak at City Hall about how environmental risks are overblown, as part of the cultural celebration that accompanied the Olympics.

Perhaps we should not be surprised by all this given the complete lack of scientific education that Johnson has received. However, the Mayor has to take scientific evidence and expert knowledge into account when making many important decisions, not the least of which is how to adapt the capital’s transport system and infrastructure to withstand the impacts of global warming. He should not be relying on the fanciful theories of friends when it comes to issues that affect the lives and livelihoods of Londoners.

Johnson should make better use of the fact that the capital is home to many world class universities and scientific societies where he could consult genuine experts, most of whom now cringe every time he holds forth about climate change. But it is also time that the Mayor of London followed the example of central government departments by adding a professional and credible chief scientific adviser to his team.

Mayor of London Boris Johnson gestures as he addresses students at The Indian School of Business (ISB) campus in Hyderabad on November 28, 2012. Photograph: Getty Images.

Bob Ward is policy and communications director of the Grantham Research Institute on Climate Change and the Environment at London School of Economics and Political Science.

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Tetris and sleep deprivation: how we can help emergency workers cope with trauma

First responders are at serious risk of developing PTSD during events like the Paris attacks. 

Some people seem able to deal with anything. They save a stranger from bleeding out in a bombed restaurant, protect passers-by from heavily armed gunmen, pull dead and dying people out of collapsed buildings, and they keep going because it is their job. These people are first responders.

When trauma goes on for days, as it has recently in Paris, however, the odds of them bouncing back from the violence, death and injury they are witnessing rapidly diminishes. They are at greater risk of developing a severe stress reaction known as post-traumatic stress disorder (PTSD). One study found that the worldwide rate of PTSD among first responders is 10 per cent, much higher than the 3.5 per cent rate among those not involved in rescue work.

Tetris to the rescue

So how best to address the problem? Research is in its infancy, but there are some promising studies. Emily Holmes’ group at the University of Cambridge has been looking at the benefits of playing Tetris, a video game, after a traumatic experience. The idea is that this could block the consolidation of traumatic memories so they don’t “flash back” later on.

For the study, her team first traumatised people by showing them distressing footage from public safety videos. The next day they invited them back into the lab to reactivate the memories with still images taken from the videos. One group then played Tetris for 12 minutes while the other sat quietly. Over the following week, the group who played Tetris had about 50 per cent fewer unwanted memories from the films compared to the group who didn’t.

The team concluded that playing Tetris helped individuals because it soaks up their visual processing capacity, making it harder for the brain to consolidate the visual parts of a traumatic memory.

Since it takes about six hours for the brain to cement a memory, the key is to play the game soon after trauma or within six hours of re-activating the traumatic memory. How long the helpful effects of playing Tetris will last and whether it will translate into helping people after real-life trauma is still unknown.

Talking it through

Other techniques, such as “updating”, taken from a highly-effective talking treatment for PTSD, may be more practical and easier to implement.

Like a detective, updating is a technique that focuses on finding new information and linking it to the case, the past memory. This is necessary because when the brain and body are in survival mode during trauma, the mind finds it difficult to encode all the relevant facts. Often key pieces of information that could make the memory less traumatic are lost. Updating links new information to someone’s memory of their trauma to make it less upsetting.

But can updating help to reduce unwanted memories after trauma?

We carried out a study, published in PLOS ONE, in which we traumatised people by showing them terrifying films of humans and animals in distress. We then divided our participants into three groups. One group watched the films again but were given new information about how long people suffered and whether or not they lived or died – essentially, they were updated. The second group watched the same films again but without the new information. And the third group watched films of humans and animals who were not in distress. The updated group had fewer traumatic memories and PTSD symptoms than the other two groups.

Updating is now being used by some UK emergency services. First responders will gather after critical incidents and update their memories of what happened before they go home.

Sleep deprivation

There are other techniques that may be helpful. One study found that depriving people of sleep may be useful in the aftermath of trauma.

But the same study found that a week after the trauma, people who had been deprived of sleep had the same number of unwanted memories as people who had slept well afterwards. Consequently, it remains unclear whether there would be any long-lasting benefits using this method. There are, however, certainly health risks linked to lack of sleep.

Still looking for a solution

To develop preventative interventions, we need to study newly-recruited emergency workers who haven’t yet suffered on-the-job trauma and follow them over time, spotting which “coping styles”, present before trauma, may predict their reactions afterwards.

For example, some people naturally react to stressful life events by dwelling on them, thinking about why they happened for hours on end. This strategy, called rumination, has been linked to PTSD in people who survived car crashes.

If rumination predicts PTSD in first responders, then preventative interventions could train people to spot when they are dwelling on an event and refocus their attention to the task at hand.

When we have identified which factors heighten emergency workers’ risk of developing PTSD, programmes can be developed to target those vulnerabilities. Only then can an intervention, directed at first responders most at risk of developing PTSD, properly protect them in their line of work.

The Conversation

Jennifer Wild is a Senior Research Fellow in Clinical Psychology at the University of Oxford

This article was originally published on The Conversation. Read the original article.