Explosive news of life on Jupiter’s erupting moon, and in Indonesia

While volcanic eruptions disrupt life in Indonesia, elsewhere in our solar system they might be making it interesting.

This column won’t be of much comfort to the thousands displaced by volcanic eruptions in Indonesia. Lava flows are reaching as far as five kilometres from Mount Sinabung, which has been erupting since September, and the Indonesian government has said that any settlements within three kilometres of the mountainside will be relocated permanently. But even if there is no human habitation in the area, we know that there will be much new life emerging in the shadow of the volcano.

This is what happened on the Japanese island of Nishinoshima. Created by a volcanic eruption 40 years ago, it is now home to four species of plant and plenty of insects.

Volcanoes are a great boon to biology. According to a paper published in this month’s edition of the journal Geology, volcanic eruptions and other side effects of the earth having a hot, molten interior are responsible for the vast range of life on our planet.

The evidence comes from zircons, crystals that are formed only in volcanic eruptions. Geologists have found a glut of zircons in rocks that formed just before the period biologists call the Cambrian Explosion. The Cambrian Explosion occurred 540 million years ago, when a huge number of new animals suddenly appeared. Most of the body forms of today were formed in this ten-million-year evolutionary spurt – after the zircons appeared. The conclusion? Volcanic eruptions are one of the earth’s vital signs: an indication that life is about to get interesting.

That is largely because eruptions throw huge amounts of carbon dioxide into the atmosphere. The warming effect this produces affects the climate and provides a change in conditions that favours the emergence of diversity. Put simply, the organisms that were suited to the old earth fall by the wayside, creating space for new life experiments.

That is especially fascinating given observations of one of Jupiter’s moons. The ice-world Europa has long been seen as a good potential home for extraterrestrial life. That candidacy just got much stronger: it was reported last month that astronomers using the Hubble Space Telescope to keep an eye on Europa have spotted evidence of volcanic activity.

Europa’s ice crust, which is thought to be a few kilometres thick, covers a watery ocean over 100 kilometres deep. Nobody knows whether life exists in that ocean, but if it does it would require a source of energy. As so little sunlight penetrates the ice crust, that would have to come from within. That is why the signs of intermittent plumes of vapour erupting from the ice have so excited hunters of extraterrestrial life: it suggests that some kind of life-giving volcanic energy is at work inside the icy moon.

We won’t find life on Europa any time soon. Though the plumes rise high enough that passing spacecraft could sample the vapour spurting from the ocean – and perhaps detect life within it – the next scheduled flyby of Europa will take place in 2031.

It is sobering to think that, if the astronomers’ conclusion is right, Europa is only the fourth body in the solar system to exhibit volcanism. The other three are its neighbouring moon Io, Saturn’s moon Enceladus and, of course, Planet Earth. These are very special places: volcanoes bring misery and death but they also usher in the possibility of complex biology. While volcanic eruptions disrupt life in Indonesia, elsewhere in our solar system they might be making it interesting.
 

More than 25,000 people have fled their homes following a series of eruptions and lava flows from Sinabung volcano in North Sumatra. Photo: AFP/Sutanta Aditya/Getty Images.

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 21 January 2014 issue of the New Statesman, The radicalism of fools

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Ken Clarke: Theresa May has “no idea” what to do about Brexit

According to the former Chancellor, “nobody in the government has the first idea of what they’re going to do next”.

Has Ken Clarke lost the greatest political battle of his career? He doesn’t think so. With his shoes off, he pads around his Westminster office in a striped shirt, bottle-green cords and spotty socks. Parliament’s most persistent Europhile seems relaxed. He laughs at the pervasive phrase that has issued from Downing Street since Theresa May became Prime Minister: “Brexit means Brexit.”

“A very simple phrase, but it didn’t mean anything,” he says. His blue eyes, still boyish at 76, twinkle. “It’s a brilliant reply! I thought it was rather witty. It took a day or two before people realised it didn’t actually answer the question.”

A former chancellor of the Exchequer, Clarke has served in three Conservative cabinets. His support for the European Union is well known. He has represented the seat of Rushcliffe in Nottinghamshire for 46 years, and his commitment to the European project has never wavered over the decades. It has survived every Tory civil war and even his three failed attempts to be elected Tory leader, standing on a pro-Europe platform, in 1997, 2001 and 2005.

“My political career looks as though it will coincide with Britain’s membership of the EU,” Clarke says, lowering himself into an armchair that overlooks the Thames. There are model cars perched along the windowsill – a hint of his love of motor racing.

Clarke won’t be based here, in this poky rooftop room in Portcullis House, Westminster, much longer. He has decided to step down at the next election, when he will be nearly 80. “I began by campaigning [in the 1960s] in support of Harold Macmillan’s application to enter [the EU], and I shall retire at the next election, when Britain will be on the point of leaving,” he says grimly.

Clarke supports Theresa May, having worked with her in cabinet for four years. But his allegiance was somewhat undermined when he was recorded describing her as a “bloody difficult woman” during this year’s leadership contest. He is openly critical of her regime, dismissing it as a “government with no policies”.

For a senior politician with a big reputation, Clarke is light-hearted in person – his face is usually scrunched up in merriment beneath his floppy hair. A number of times during our discussion, he says that he is trying to avoid getting “into trouble”. A painting of a stern Churchill and multiple illustrations of Gladstone look down at him from his walls as he proceeds to do just that.

“Nobody in the government has the first idea of what they’re going to do next on the Brexit front,” he says. He has a warning for his former cabinet colleagues: “Serious uncertainty in your trading and political relationships with the rest of the world is dangerous if you allow it to persist.”

Clarke has seen some of the Tories’ bitterest feuds of the past at first hand, and he is concerned about party unity again. “Whatever is negotiated will be denounced by the ultra-Eurosceptics as a betrayal,” he says. “Theresa May has had the misfortune of taking over at the most impossible time. She faces an appalling problem of trying to get these ‘Three Brexiteers’ [Boris Johnson, David Davis and Liam Fox] to agree with each other, and putting together a coherent policy which a united cabinet can present to a waiting Parliament and public. Because nobody has the foggiest notion of what they want us to do.”

Clarke reserves his fiercest anger for these high-profile Brexiteers, lamenting: “People like Johnson and [Michael] Gove gave respectability to [Nigel] Farage’s arguments that immigration was somehow a great peril caused by the EU.”

During the referendum campaign, Clarke made headlines by describing Boris Johnson as “a nicer version of Donald Trump”, but today he seems more concerned about David Cameron. He has harsh words for his friend the former prime minister, calling the pledge to hold the referendum “a catastrophic decision”. “He will go down in history as the man who made the mistake of taking us out of the European Union, by mistake,” he says.

Clarke left the government in Cameron’s 2014 cabinet reshuffle – which came to be known as a “purge” of liberal Conservatives – and swapped his role as a minister without portfolio for life on the back benches. From there, he says, he will vote against the result of the referendum, which he dismisses as a “bizarre protest vote”.

“The idea that I’m suddenly going to change my lifelong opinions about the national interest and regard myself as instructed to vote in parliament on the basis of an opinion poll is laughable,” he growls. “My constituents voted Remain. I trust nobody will seriously suggest that I should vote in favour of leaving the European Union. I think it’s going to do serious damage.”

But No 10 has hinted that MPs won’t be given a say. “I do think parliament sooner or later is going to have to debate this,” Clarke insists. “In the normal way, holding the government to account for any policy the government produces . . . The idea that parliament’s going to have no say in this, and it’s all to be left to ministers, I would regard as appalling.”

Clarke has been characterised as a Tory “wet” since his days as one of the more liberal members of Margaret Thatcher’s government. It is thought that the former prime minister had a soft spot for his robust manner but viewed his left-wing leanings and pro-European passion with suspicion. He is one of parliament’s most enduring One-Nation Conservatives. Yet, with the Brexit vote, it feels as though his centrist strand of Tory politics is disappearing.

“I don’t think that’s extinct,” Clarke says. “The Conservative Party is certainly not doomed to go to the right.”

He does, however, see the rise of populism in the West as a warning. “I don’t want us to go lurching to the right,” he says. “There is a tendency for traditional parties to polarise, and for the right-wing one to go ever more to the right, and the left-wing one to go ever more to the left . . . It would be a catastrophe if that were to happen.”

Clarke’s dream of keeping the UK in Europe may be over, but he won’t be quiet while he feels that his party’s future is under threat. “Don’t get me into too much trouble,” he pleads, widening his eyes in a show of innocence, as he returns to his desk to finish his work. 

Anoosh Chakelian is deputy web editor at the New Statesman.

This article first appeared in the 29 September 2016 issue of the New Statesman, May’s new Tories