First vertical farm opens in Singapore

Nine stories of greens.

Channel News Asia's Olivia Siong writes about the opening of what appears to be the world's first commercial vertical farm:

The technique uses aluminium towers that are as tall as nine metres, and vegetables are grown in troughs at multiple levels. The technique utilises space better an advantage for land-scarce Singapore. Sky Greens farm first started working on the prototype in 2009, and has opened a 3.65-hectare farm in Lim Chu Kang.

The farm currently has 120 vertical towers, and hopes to increase the number to 300 by next year. This will increase its current daily supply of vegetables from 0.5 tonnes to two tonnes by 2013.

"The challenge will be to get investors interested. This type of farm needs (relatively) higher capital," said Dr Ngiam Tong Tau, the chairman of Sky Greens. "This is a new system, so people need to be trained (and) we need to attract people to come here to work."

The farm's expansion is expected to cost some S$27 million. Currently, about seven per cent of Singapore's vegetables are grown locally.

The site has a photo of the farm, while more are available at inhabitat:

Vertical farming is of questionable utility at present, but as with so many things, where Singapore goes, the rest of the world may follow. As pressure for locally sourced food squares up against the continued growth of urban populations worldwide, the technology may let off some of that pressure.

Vertical farm! Photograph: inhabitat

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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How Theresa May laid a trap for herself on the immigration target

When Home Secretary, she insisted on keeping foreign students in the figures – causing a headache for herself today.

When Home Secretary, Theresa May insisted that foreign students should continue to be counted in the overall immigration figures. Some cabinet colleagues, including then Business Secretary Vince Cable and Chancellor George Osborne wanted to reverse this. It was economically illiterate. Current ministers, like the Foreign Secretary Boris Johnson, Chancellor Philip Hammond and Home Secretary Amber Rudd, also want foreign students exempted from the total.

David Cameron’s government aimed to cut immigration figures – including overseas students in that aim meant trying to limit one of the UK’s crucial financial resources. They are worth £25bn to the UK economy, and their fees make up 14 per cent of total university income. And the impact is not just financial – welcoming foreign students is diplomatically and culturally key to Britain’s reputation and its relationship with the rest of the world too. Even more important now Brexit is on its way.

But they stayed in the figures – a situation that, along with counterproductive visa restrictions also introduced by May’s old department, put a lot of foreign students off studying here. For example, there has been a 44 per cent decrease in the number of Indian students coming to Britain to study in the last five years.

Now May’s stubbornness on the migration figures appears to have caught up with her. The Times has revealed that the Prime Minister is ready to “soften her longstanding opposition to taking foreign students out of immigration totals”. It reports that she will offer to change the way the numbers are calculated.

Why the u-turn? No 10 says the concession is to ensure the Higher and Research Bill, key university legislation, can pass due to a Lords amendment urging the government not to count students as “long-term migrants” for “public policy purposes”.

But it will also be a factor in May’s manifesto pledge (and continuation of Cameron’s promise) to cut immigration to the “tens of thousands”. Until today, ministers had been unclear about whether this would be in the manifesto.

Now her u-turn on student figures is being seized upon by opposition parties as “massaging” the migration figures to meet her target. An accusation for which May only has herself, and her steadfast politicising of immigration, to blame.

Anoosh Chakelian is senior writer at the New Statesman.

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