Our warming planet, set to music

This is what climate change sounds like.

I like data. Charts, graphs, tables, spreadsheets: anything which communicates information is good in my book (although infographics can get wearing, I'll admit). But I've not before heard music which does the same job.

Via Grist's Jess Zimmerman, I've now seen the work of University of Minnesota student Daniel Crawford, who has composed a piece of music based on our warming planet. Give it a listen. It's entrancing:

In the composition, each note represents a year from 1880 to 2012. The pitch is set so that the coldest year on record is equal to the lowest note on a cello, and each semitone is equal to "roughly 0.03˚C of planetary warming". The result is a haunting atonal composition – but also one which steadily rises in pitch, finishing three octaves above where it began. Similar projects normally set the data being played to a scale, which makes it easier to listen to (here's Pi in the key of C Major, for instance), but it's appropriate that something as catastrophic as climate change should be set to music which is fundamentally unsettling.

Not so unsettling as the line at the end, though:

Scientists predict the planet will warm by another 1.8°C (3.2°F) by the end of this century. This additional warming would produce a series of notes beyond the range of human hearing.

In case you want to play along at home, the sheet music is here and an MP3 of the song is here

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

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Jeremy Corbyn's Labour conference speech shows how he's grown

The leader's confident address will have impressed even his fiercest foes. 

It is not just Jeremy Corbyn’s mandate that has been improved by his re-election. The Labour leader’s conference speech was, by some distance, the best he has delivered. He spoke with far greater confidence, clarity and energy than previously. From its self-deprecating opening onwards ("Virgin Trains assure me there are 800 empty seats") we saw a leader improved in almost every respect. 

Even Corbyn’s firecest foes will have found less to take issue with than they may have anticipated. He avoided picking a fight on Trident (unlike last year), delivered his most forceful condemnation of anti-Semitism (“an evil”) and, with the exception of the Iraq war, avoided attacks on New Labour’s record. The video which preceded his arrival, and highlighted achievements from the Blair-Brown years, was another olive branch. But deselection, which Corbyn again refused to denounce, will remain a running sore (MPs alleged that Hillsborough campaigner Sheila Coleman, who introduced Corbyn, is seeking to deselect Louise Ellman and backed the rival TUSC last May).

Corbyn is frequently charged with lacking policies. But his lengthy address contained several new ones: the removal of the cap on council borrowing (allowing an extra 60,000 houses to be built), a ban on arms sales to abusive regimes and an arts pupil premium in every primary school.

On policy, Corbyn frequently resembles Ed Miliband in his more radical moments, unrestrained by Ed Balls and other shadow cabinet members. He promised £500bn of infrastructure investment (spread over a decade with £150bn from the private sector), “a real living wage”, the renationalisation of the railways, rent controls and a ban on zero-hours contracts.

Labour’s greatest divisions are not over policy but rules, strategy and culture. Corbyn’s opponents will charge him with doing far too little to appeal to the unconverted - Conservative voters most of all. But he spoke with greater conviction than before of preparing for a general election (acknowledging that Labour faced an arithmetical “mountain”) and successfully delivered the attack lines he has often shunned.

“Even Theresa May gets it, that people want change,” he said. “That’s why she stood on the steps of Downing Street and talked about the inequalities and burning injustices in today’s Britain. She promised a country: ‘that works not for a privileged few but for every one of us’. But even if she manages to talk the talk, she can’t walk the walk. This isn’t a new government, it’s David Cameron’s government repackaged with progressive slogans but with a new harsh right-wing edge, taking the country backwards and dithering before the historic challenges of Brexit.”

After a second landslide victory, Corbyn is, for now, unassailable. Many MPs, having voted no confidence in him, will never serve on the frontbench. But an increasing number, recognising Corbyn’s immovability, speak once again of seeking to “make it work”. For all the ructions of this summer, Corbyn’s speech will have helped to persuade them that they can.

George Eaton is political editor of the New Statesman.