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ScienceMay 6, 2024

The climate cost of your digital life

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How worried should we be about the cloud?

This is an excerpt from our weekly environmental newsletter Future Proof. Sign up here.

I currently have a few thousand unread emails languishing in my inbox, mostly old marketing newsletters and piles of unread science journal press releases. I have a similar number of photos backed up from my phone: screenshots, sunset snaps, and many, many pictures of my dog.

Collectively, everyone’s data adds up. We’re creating content at a mind-boggling pace and scale: 54,000 photos are taken every second, and this year we’re estimated to create around 120 zettabytes of data. By 2035, data creation is predicted to exceed 2,000 zettabytes. Printing out just one zettabyte would require paper from 20 trillion trees (except we only have 3.5 trillion trees on Earth), or would fill more than 212 billion standard DVDs.

Much of our digital information exists in the “Cloud” – which sounds like an airy, non-physical concept, but in reality is a very physical, very large hard drive somewhere: in a data centre stuffed with servers. These data centres require electricity to power them and (often) water to keep them cool. Millions of servers become e-waste every year. This means that all your digital memories have an environmental cost, as Shanti Mathias points out in this excellent story.

Consuming data also has a carbon cost. Video streaming takes up the lion’s share of the world’s digital footprint: one hour of watching Netflix emits about 55g of carbon in Europe – a figure that varies widely between users based on the mix of renewables/fossil fuels powering the electricity grid, the resolution you’re watching at, and what sort of device you’re using to watch.

Data centres are responsible for about 1% of the world’s energy-related greenhouse gas emissions, according to the International Energy Agency. Another estimate puts the carbon footprint of the internet and all its associated gadgets as bigger than that of the airline industry. One silver lining is that the energy efficiency of data centres and devices has improved rapidly, meaning energy demand hasn’t ballooned in-step with the data boom.

Here in New Zealand, Mathias notes, data centres mostly use renewable energy. But if you use an international service like Google, your selfie photoshoots and email archives could be stored in a data centre powered by fossil fuels. As more companies look to build data centres in Aotearoa – including global behemoths like Amazon – we face challenges including water use and growing our renewable energy capacity to keep pace (not just with data needs, but with electrification of other things like transport). The incipient artificial intelligence revolution is set to send the digital economy’s carbon emissions into overdrive, too.

What does this mean for me, and you, as senders of emails and snap-happy smartphone photographers? You can go on a cathartic deleting spree (which has the added bonus of extending the life of your gadget) but really, the climate impact for an individual is pretty negligible. Even streaming your favourite show is a fairly low-emitting activity, in the scheme of emitting activities.

Nonetheless, I think there’s something valuable about being more considered in our digital habits: deleting the duds and only keeping the best, unsubscribing from emails that encourage us to buy, buy, buy, unscheduling Zooms that could be emails instead. And more often, simply switching off.

Keep going!
Photo: Supplied
Photo: Supplied

ScienceApril 26, 2024

‘The worst piece of law proposed since 1979’: Reactions to the Fast-track Approvals Bill

Photo: Supplied
Photo: Supplied

A brief round-up of submissions on the controversial proposed law.

This is an excerpt from our weekly environmental newsletter Future Proof. Sign up here.

Last week, submissions on the controversial Fast-track Approvals Bill closed just hours after the government released a list of stakeholder organisations who were sent letters advising how they could apply for the fast track. The Bill aims to create a “one-stop shop” for green-lighting infrastructure and development projects of national or regional significance, but it has faced fierce criticism for sidelining environmental concerns, concentrating decision-making power in the hands of three ministers, and potentially breaching Treaty rights.

Here’s what different groups and officials have said about the bill in the last week.

The government watchdogs

Parliamentary commissioner for the environment Simon Upton released a meaty submission recommending eight changes to the proposed new law, including removing the role of ministers as the final decision-makers. Upton said the bill posed “significant risks to the environment”, comparing it to the Muldoon government’s similar – and deeply unpopular – legislation: “Even the much-maligned National Development Act 1979 had more environmental checks and balances.” Upton didn’t hold back, writing that the bill would “achieve sub-optimal outcomes through poor decision-making, poor allocation of resources, a lack of legislative durability, and increased litigation risk.” Another independent government official, auditor-general John Ryan, weighed in too, suggesting that measures to manage conflicts of interest be beefed up and that ministers should publish the reasoning for their decisions. “Power comes, in my view, with an obligation to be transparent to the public,” Ryan wrote.

The expert researchers

The fast-track process is “more about getting bad things done in a potentially dangerous way,” write two law professors in The Guardian. Margaret Stanley, a professor of ecology, outlined five ways the bill threatens nature, writing that it “risks eroding the country’s already fragile natural capital.” Prominent anthropologist Dame Anne Salmond published her biting submission on Newsroom: “No MP who believes in democracy can support this bill and stay true to their values,” she said, while also expressing concern that the ministers are acting as if the bill has already become law. “By behaving as though it has already been passed, the ministers are treating the democratic process with contempt.”

The business interests

The Sustainable Business Network, representing more than 500 businesses and other organisations, said the bill is “a significant, and possibly disastrous, downgrade in environmental oversight.” The network’s submission also noted that the bill would undermine long-term development, and could jeopardise international trade, with places like the European Union increasingly requiring proof of sustainability creds.

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The environmental groups

The Environmental Defence Society (EDS), like Upton, drew comparisons to the 1980s era of unbridled power: “The Bill is the worst piece of law proposed since the National Development Act 1979 (although, as pointed out at various places above, the Bill is actually less environmentally and constitutionally sound than that Act in many places).” Three environmental groups – EDS, Forest & Bird and WWF – picked up on an inconsistency in wording which could open up national parks to mining. When the Key government proposed something similar in 2010, it was met with fierce opposition and a 40,000-strong march down Queen Street.

The Fast-track Approvals Bill is now being considered by the Environment Select Committee. The committee’s report is due 7 September 2024.