Reasons to be careful

Asteroids strikes, radiation and Rio+20.

So, yet another thing to worry about. It might not sound like news, but something big hit earth back in the 770s. Researchers looking at the radioactive carbon traces in tree rings from that period have discovered evidence of a burst of intense radiation between 774 and 775AD. It might seem churlish to worry about something that happened 1,200 years ago, given the problems that the Rio+20 summit this month clearly was not even going to begin to address. Yet warning us of potential danger is part of the scientist’s job description. What we do with that information is up to us.

The source of that 1,200-year-old radiation burst – potentially the harbinger of a much bigger catastrophe than climate change – is a mystery to scientists. A burst of radiation of this sort would normally come from a spectacular solar flare or a supernova. Taking the second option first, the exploding star in question would have been bright enough to be visible in daylight – a second sun that would have been recorded by contemporary historians. It should also have been spotted by today’s astronomers: the explosion would have created what looked like a new star. Stellar explosions recorded in 1006 and 1054 weren’t big enough to cause a spike in radiation but we have spotted the remnants in the sky.

The solar flare explanation has been ruled out, too. A flare occurs when the sun spits out a gob of plasma, a roiling gas of charged subatomic particles. If that is composed largely of protons and fired towards earth, its interaction with particles in Planet Earth’s atmosphere creates a burst of intense radiation. But it also creates the Northern and Southern Lights and, again, a radiation spike of this intensity would have produced a show spectacular enough to be recorded by historians.

On the downside, it would also have wiped out much of the ozone layer, causing biological chaos. The extra radiation and intense ultraviolet light usually absorbed by ozone would have mutated genomes and led to significant extinctions. There is no evidence that this occurred.

Why does it matter? Until we understand the source, we face a significant unknown. If it is somehow a threat from the sun, the threat is far bigger than we have known. Such a spike in radiation could be associated with the kind of solar activity that could melt many of the world’s power grids, sending civilisations howling back to the Stone Age.

We already know that things from space could hurt us badly. There’s about a one-in-five chance that, in the next 100,000 years, an asteroid strike will do as much damage as the one that wiped out the dinosaurs. There is no reason for complacency: it’s highly likely that, in the same time frame, a chunk of space rock roughly 400 metres in diameter will hit earth. The impact will be significant enough to devastate an area the size of France.

Too much in the sun

The tree-ring work, published in the journal Nature this month, suggests that scientists don’t yet have a handle on all the threats to humanity. But it will almost certainly be dismissed as another curiosity, not worth following up.

Maybe that is the right response. The conclusions were a result of interpreting the amounts of radioactive carbon – created by collisions between particles in the upper atmosphere – trapped in the tree rings.

Anyone with responsibility to act over threats to his or her citizens can choose to find weaknesses and uncertainties in the data, the extrapolations and the conclusions and thus justify a non-response. Just as our political leaders (or, rather, their delegations) will do in Rio. l

Michael Brooks’s “The Secret Anarchy of Science” is out now in paperback (Profile Books, £8.99)

Michael Brooks holds a PhD in quantum physics. He writes a weekly science column for the New Statesman, and his most recent book is At the Edge of Uncertainty: 11 Discoveries Taking Science by Surprise.

This article first appeared in the 25 June 2012 issue of the New Statesman, Europe’s most dangerous leader

Felipe Araujo
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Hull revisited: What happens when a Brexit stronghold becomes City of Culture?

We report from Hull, to find out if you can replace the kind of nostalgia that led to a Leave vote with cultural investment.

At 75 metres long, the offshore wind turbine blade erected across Queen Victoria Square, in the heart of Hull, is a sculpture intended to mark a new chapter in the city’s history. For the next 12 months, Hull, a city of more than a quarter of a million people in the northeast of England, will be the UK’s City of Culture.

The 28-tonne blade hails from the local Siemens plant. The German technology company employs around 1,000 people in the area, making it Hull’s biggest single employer.

Seen up close in this context – laid dormant in the middle of a town square instead of spinning up in the air generating energy – the structure is meant to remind passersby of a giant sea creature. It is also, I’m told, an allusion to Hull’s rich maritime history.


All photos: Felipe Araujo

Nostalgia is a big thing in this part of the country. At one point, Hull was the UK’s third largest port but technology and privatisation drastically changed that. The battle over cod fishing with Iceland in the waters of the North Sea 40 years ago has also dealt a major blow to a region with a long and proud trawling tradition.

People here still talk about a bygone era when the fishing industry provided jobs for everyone and there was enough money to go around.

Fast forward to 2017, and the country’s new capital of culture is the same city that voted 67 per cent in favour of leaving the EU last June. Its new-found prestige, it seems, is not enough to erase years of neglect by a political class “too busy for commoners like us”, as one resident puts it.

“More than a message to Brussels, it [the Brexit vote] was a message to Westminster,” Paul Leeson-Taylor, a filmmaker born and bred in Hull, tells me. “For the first time in a long time people in Hull felt like they had the chance to change something, and they took it.”

But while speaking to people on the high street and hanging out with locals at the Community Boxing Club in Orchard Park, one of the city’s most deprived areas, there is one word that consistently popped up in conversation – more than any specific policy from Westminster or the much-hated rules “dictated” by Brussels. Foreigners.

According to official figures, Hull’s population is 89.1 per cent white British. Still, immigration is big on people’s minds here.

During my two-day stay in the city, I find myself being the only black person in most places I visit – I’m certainly the only black guy at the boxing club. So when someone begins a sentence with “I’m not racist but…”, I know a tirade on immigrants is about to ensue.

“There are just too many of them,” Nick Beach, an estate agent whose Polish clientele is a big part of his business, tells me as he is about to teach a boxing class to local children. Beach was born in Shepherd’s Bush, in West London, but has been living in Hull for the last 20 years.

“When I go down there these days and go into Westfield shopping centre, it is very rare you get an English person serving you now,” he says. “I just find it disappointing that you go into your capital city and you are a minority there.”

These are the much-discussed “left behind”, a white working-class community that has gained particular prominence in a time of Brexit and Donald Trump. Under economic pressure and facing social change, they want to have their say in running a country they claim to no longer recognise.

For Professor Simon Lee, a senior politics lecturer at the University of Hull, immigration is only a superficial layer when it comes to explaining the resentment I witness here. For him, the loss of the empire 70 years ago is still something that as a country Britain hasn’t come to terms with.

“The reason for us to be together as a United Kingdom has gone, so what is the project?”

As destiny would have it, a foreign company will now play a major role on Hull’s economic future, at least in the short term. In the wake of the Brexit vote, there were widespread fears Siemens would pull out of the region and take its factory elsewhere. With the massive blade looming large in the background, Jason Speedy, director of the blade factory in Hull, assures me that isn’t the case.

“The Brexit decision has made no difference. We have made our investment decision, so Siemens, together with the Association of British Ports, has put in £310m. It’s all full steam ahead.”

As Hull becomes the country’s cultural hub for the next few months, the hope is that its residents stop looking back and start looking forward.

For Professor Lee, though, until there is a complete change in the power structures that run the country, the north-south divide will remain – with or without the EU. “The way you kill nostalgia is to have something new,” he said. “The reason why people here are nostalgic is because there is nothing to replace it with.”

Felipe Araujo is a freelance journalist based in London. He writes about race, culture and sports. He covered the Rio Olympics and Paralympics on the ground for the New Statesman. He tweets @felipethejourno.