We need to eat less meat - and the G8 should say so

Instead of feeding starving humans, we funnel huge amounts of crops through the animals we use for food. G8 leaders must call for change at next week's summit.

In Davos this April, David Cameron outlined his priorities for the UK's presidency of the G8 this year. He talked about advancing trade, ensuring tax compliance and promoting greater transparency, all with the goal of creating "lasting global prosperity". It's a noble goal – lifting people out of poverty and making corporations accountable for their actions. It's reassuring to see these issues receive international attention.

But there is one obvious issue that is not being talked about, which should be at the top of the G8 agenda: animal agriculture and its contribution to world hunger, environmental degradation and skyrocketing healthcare costs, all of which affect the global economy.

There is more than enough food being grown around the world to feed the entire human population. So why are more than a billion people going hungry? Because instead of feeding starving humans, we funnel huge amounts of crops through the animals we use for food. It takes up to 16 pounds of grain to produce just 1 pound of meat. And an astounding 97 per cent of the world's soya crop goes to farmed animals rather than to hungry people.

We could eliminate the worst cases of world hunger with about 40 million tonnes of food. And it would be easy enough to find: nearly 20 times that amount of grain, 760 million tonnes, is fed to animals on factory farms every single year. Compare this to biofuels, which account for only 100 million tonnes. Tens of thousands of people marched in London on Saturday in support of Enough Food IF, a laudable campaign which highlights biofuels as one of the "bad guys" in the fight to end global hunger – and yet, inexplicably, it doesn't have animal agriculture as one of its key themes.

By cutting our meat consumption and slowing the rate at which animals are bred, we could redirect the crops that they would have consumed to the people who need them most. That's why the prestigious Worldwatch Institute maintains that "[m]eat consumption is an inefficient use of grain – the grain is used more efficiently when consumed directly by humans. Continued growth in meat output is dependent on feeding grain to animals, creating competition for grain between affluent meat-eaters and the world's poor". Therefore, raising animals for meat creates a disturbing social-justice issue.

And as meat-based diets spread to developing countries, subsistence farmers are being driven off their land. Efficient, plant-based agricultural models are being replaced by intensive animal agriculture, which also pollutes the air and water and leads to desertification that renders the once-fertile land barren.

The United Nations reports that the meat industry is "one of the top two or three most significant contributors to the most serious environmental problems, at every scale from local to global". And it's easy to see why. Carbon dioxide, methane and nitrous oxide are the principal agents of climate change – and raising animals for food is one of the largest sources of carbon dioxide and the largest source of both methane and nitrous-oxide emissions. When you add up all the energy-intensive stages of raising animals for food, slaughtering them and processing and storing their flesh, it's clear why producing 1 calorie of animal protein requires more than 11 times as much fossil fuel as producing 1 calorie of plant protein. In addition, Greenpeace estimates that in a single crop season, more than 2.9 million acres of the Amazon rain forest in Brazil are destroyed to make more room to grow crops to feed farmed animals.

The water footprint of the livestock sector is also huge. It takes more than 2,400 gallons of water to produce 1 pound of meat, while growing 1 pound of wheat requires only 25 gallons. You save more water by not eating a pound of meat than you do by not showering for six months!

Not surprisingly, the United Nations Environment Programme concluded  that "[a] substantial reduction of impacts would only be possible with a substantial worldwide diet change, away from animal products".

Environmental issues, in turn, have a serious impact on our economy. Heat waves, droughts, rising sea levels and other problems caused by climate change can ruin crops and result in increased food prices. Major storms, a developing trend that scientists have also linked to environmental destruction, often do billions of pounds in damage. Sir Nicholas Stern, author of the government-commissioned review on climate change, which has been the reference work for politicians and journalists throughout the last 10 years, warns that if we do not reduce greenhouse-gas emissions, it will take less than 40 years for climate change to cause up to a 20 per cent drop in the world's gross domestic product. He fears that it could be "market failure on the greatest scale the world has seen".

Then there are the skyrocketing healthcare costs that are attributable in large part to the increase in human consumption of meat, eggs and dairy products. Loaded with artery-clogging cholesterol and saturated fat, these products have been linked to cancer, heart attacks, strokes, diabetes and obesity. These top killers burden the National Health Service and necessitate that billions of pounds be spent searching for cures and medications to relieve disease symptoms. They also claim a huge number of lives.

Aside from their environmental and health impacts, the meat, dairy and egg industries cause immense suffering to more than a billion animals every year in the UK alone, most of whom spend their entire lives crammed inside dark, filthy sheds. They don't get to breathe fresh air until they are on their way to the abattoir, where many have their throats slit while they are still conscious.

"Lasting global prosperity" can be attained only through sustainable growth – otherwise, we will simply compound current environmental and economic problems. World leaders at the G8 Summit must take into account the devastating impact of animal agriculture in order to encourage global food changes that will be the catalyst for such growth.

The UN reports that the meat industry is "one of the top two or three most significant contributors to the most serious environmental problems". Photograph: Getty Images.

Kerry McCarthy is the Labour MP for Bristol East and the shadow foreign minister.

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Winning Scottish independence will be even harder than before - but it may be the only choice

Independence campaigners will have to find answers on borders, currency and more. 

The Brexit mutiny has taken not just the UK economy and its relationship with Europe into uncharted waters. it has also imperilled the union between Scotland and England. From Sir John Major to the First Minister, both Unionists and Nationalists had warned of it. The outcome, though, has made this certain. The Leave vote in England and Wales contrasted with an overwhelming Remain vote north of the border.

That every region in Scotland voted to stay In was quite remarkable. Historically, fishing and industrial communities have blamed the European Union for their woes. That antagonism was probably reflected in lower turnout - an abstention rather than a rejection. 

The talk now is of a second referendum on independence. This is understandable given the current mood. Opinion polls in the Sunday Times and Sunday Post showed a Yes vote now at 52 per cent and 59 per cent respectively. Moreover, anecdotal evidence suggests even arch No vote campaigners, from JK Rowling to the Daily Record, are considering the option.

The First Minister was therefore correct to say that a second referendum is now “back on the table”. Her core supporters expects no less. However, as with the economy and Europe, the constitutional relationship between Scotland and England is now in uncharted seas. Potential support for independence may be higher, but the challenges are arguably bigger than before. The difficulties are practical, political and geographic.

Of course the Little Englanders likely to take the helm may choose a velvet divorce. However, given their desire for the return of the Glories of Britannia that’s improbable. They’re as likely to wish to see Caledonia depart, as cede Gibraltar to Spain, even though that territory voted even more overwhelmingly In.

Ticking the legal boxes

Practically, there’s the obstacle of obtaining a legal and binding referendum. The past vote was based on the Edinburgh Agreement and legislation in Westminster and Holyrood. The First Minister has indicated the democratic arguments of the rights of the Scots. However, that’s unlikely to hold much sway. A right-wing centralist Spanish government has been willing to face down demands for autonomy in Catalonia. Would the newly-emboldened Great Britain be any different?

There are no doubt ways in which democratic public support can be sought. The Scottish Government may win backing in Holyrood from the Greens. However, consent for such action would need to be obtained from the Presiding Officer and the Lord Advocate, both of whom have a key role in legislation. These office holders have changed since the first referendum, where they were both more sympathetic and the legal basis clearer. 

Getting the EU on side

The political hurdles are, also, greater this time than before. Previously the arguments were over how and when Scotland could join the EU, although all accepted ultimately she could remain or become a member. This time the demand is that Scotland should remain and the rest of the UK can depart. But will that be possible? The political earthquake that erupted south of the Border has set tectonic plates shifting, not just in the British isles but across the European continent. The fear that a Brexit would empower dark forces in the EU may come to pass. Will the EU that the UK is about to leave be there for an independent Scotland to join? We cannot know, whatever European Commission President Jean-Claude Juncker may be saying at the moment. The First Minister is right to start engaging with Europe directly. But events such as elections in France and the Netherlands are outwith her control. 

Moreover, currency was the Achilles heel in the last referendum, and hasn’t yet been addressed. George Osborne was adamant in his rejection of a currency union. The options this time round, whether a separate Scottish currency or joining the euro, have yet to be properly explored. A worsened financial situation in the 27 remaining EU members hampers the latter and the former remains politically problematic. 

The problem of borders

Geography is also an obstacle  that will be even harder to address now than before. Scotland can change its constitution, but it cannot alter its location on a shared island. In 2014, the independence argument was simply about changing the political union. Other unions, whether monarchy or social, would remain untouched. The island would remain seamless, without border posts. An independent Scotland, whether in or out of the EU, would almost certainly have to face these issues. That is a significant change from before, and the effect on public opinion unknown.

The risk that's worth it

Ultimately, the bar for a Yes vote may be higher, but the Scots may still be prepared to jump it. As with Ireland in 1920, facing any risk may be better than remaining in the British realm. Boris Johnson as Prime Minister would certainly encourage that. 

David Cameron's lack of sensitivity after the independence referendum fuelled the Scottish National Party surge. But perhaps this time, the new Government will be magnanimous towards Scotland and move to federalism. The Nordic Union offers an example to be explored. Left-wing commentators have called for a progressive alliance to remove the Tories and offer a multi-option referendum on Scotland’s constitution. But that is dependent on SNP and Labour being prepared to work together, and win the debate in England and Wales.

So, Indy Ref The Sequel is on the table. It won’t be the same as the first, and it will be more challenging. But, if there is no plausible alternative, Scots may consider it the only option.

Kenny MacAskill served as a Scottish National MSP between 2007 and 2016, and as Cabinet Secretary for Justice between 2007 and 2014.