The optimism of Mark Stevenson

The former pop star and cryptographer who knows how to save the world.

With swaths of Australia's eastern seaboard underwater, this week's New Statesman has a timely piece on the simple idea that could stop the country's destructive cycle of drought and flood. (You'll never guess what it is.)

It's written by Mark Stevenson, whose book An Optimist's Tour of the Future was published yesterday. It has received stellar reviews all over the place and is one of the most interesting science books I've read for a long time.

It turns out that Mark's got the best back story since Brian Cox – he, too, was in a pop band (they were big in Chile) and he was also a cryptography expert. Now, he's a stand-up comedian, writer and educator, trying to find out whether we're all doomed.

He has decided to take an optimistic – but rational – look at what the future might hold for us as a species. In his own words:

I've travelled over 60,000 miles across four continents, talked to more than 30 geniuses, met four robots and had two terrible conversations with computers. I've contemplated immortality, the end of capitalism and a new age of human evolution. In the process, I've attended an underwater cabinet meeting, helped invent one cocktail, been insulted in the outback, made a brace of new friends and had near-death experiences. I'm not the same person I was when I started.

The contentious subjects covered by the book include the human genome, nanotechnology, genetic engineering and renewable energy. Stevenson tackles them in an approachable way by focusing on the individual stories of the (often quite eccentric) people involved.

One of them is Aubrey de Grey, the gerontologist whose work on rodents makes him think that people can live to a 1,000 years old (as long as we don't get fat). You can see de Grey in action at a Ted talk here. Not only does he have the best beard in science, he might be the fastest talker you'll ever hear.

Mark also met a Columbia University professor called Klaus Lackner, who's developed a cheap and efficient way to scrub CO2 from the atmosphere – and now needs $20m to build a commercial prototype.

Then there's the controversial futurist Ray Kurzweil, who believes that humans will soon merge with technology and become a new species. (I knew my Xbox had been looking at me oddly.)

You can read more about the book (and Mark's pop career) here.

Helen Lewis is deputy editor of the New Statesman. She has presented BBC Radio 4’s Week in Westminster and is a regular panellist on BBC1’s Sunday Politics.

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Emily Thornberry heckled by Labour MPs as tensions over Trident erupt

Shadow defence secretary's performance at PLP meeting described as "risible" and "cringeworthy". 

"There's no point trying to shout me down" shadow defence secretary Emily Thornberry declared midway through tonight's Parliamentary Labour Party meeting. Even by recent standards, the 70-minute gathering was remarkably fractious (with PLP chair John Cryer at one point threatening to halt it). Addressing MPs and peers for the first time since replacing Maria Eagle, Thornberry's performance did nothing to reassure Trident supporters. 

The Islington South MP, who voted against renewal in 2007, said that the defence review would be "wide-ranging" and did not take a position on the nuclear question (though she emphasised it was right to "question" renewal). She vowed to listen to colleagues as well as taking "expert advice" and promised to soon visit the Barrow construction site. But MPs' anger was remorseless. Former shadow defence minister Kevan Jones was one of the first to emerge from Committee Room 14. "Waffly and incoherent, cringeworthy" was his verdict. Another Labour MP told me: "Risible. Appalling. She compared Trident to patrolling the skies with spitfires ... It was embarrassing." A party source said afterwards that Thornberry's "spitfire" remark was merely an observation on changing technology. 

"She was talking originally in that whole section about drones. She'd been talking to some people about drones and it was apparent that it was absolutely possible, with improving technology, that large submarines could easily be tracked, detected and attacked by drones. She said it is a question of keeping your eye on new technology ... We don't have the spitfires of the 21st century but we do have some quite old planes, Tornadoes, but they've been updated with modern technology and modern weaponry." 

Former first sea lord and security minister Alan West complained, however, that she had failed to understand how nuclear submarines worked. "Physics, basic physics!" he cried as he left. Asked how the meeting went, Neil Kinnock, who as leader reversed Labour's unilateralist position in 1989, simply let out a belly laugh. Thornberry herself stoically insisted that it went "alright". But a shadow minister told me: "Emily just evidently hadn't put in the work required to be able to credibly address the PLP - totally humiliated. Not by the noise of the hecklers but by the silence of any defenders, no one speaking up for her." 

Labour has long awaited the Europe split currently unfolding among the Tories. But its divide on Trident is far worse. The majority of its MPs are opposed to unilateral disarmament and just seven of the shadow cabinet's 31 members share Jeremy Corbyn's position. While Labour MPs will be given a free vote when the Commons votes on Trident renewal later this year (a fait accompli), the real battle is to determine the party's manifesto stance. 

Thornberry will tomorrow address the shadow cabinet and, for the first time this year, Corbyn will attend the next PLP meeting on 22 February. Both will have to contend with a divide which appears unbridgeable. 

George Eaton is political editor of the New Statesman.