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Is the crypto boom contributing to climate change? | TICKER VIEWS

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Bitcoin cryptocurrency and climate change with world on fire

Elon Musk recently tweeted that Tesla is going to pull support for Bitcoin over environmental concerns. This sent Bitcoin prices tumbling, and also has raised questions about the sustainability of cryptocurrency.  So, can cryptocurrency ever be sustainable?

Why does Bitcoin mining use so much energy? 

When people speak about the energy cost of cryptocurrencies, they’re usually talking about the impact of mining Bitcoin.

Bitcoin miners use a computer to solve increasingly difficult algorithms which form the blockchain. The trick is to get all miners to agree on the same history of transactions for the blockchain. 

This mining process requires a significant amount of computing power, which in turn requires large amounts of electricity. This can pose an environmental issue when the miners use fossil fuels.

However, the large amounts of energy consumption required to mine Bitcoin is majorly a product of its increasing popularity, rather than being an inherent design element, says Liam Bussell from BANXA. 

“If we could go back to 2013 you could mine with a computer at home and it would be profitable. It would not be today, because this hardware arms race is driven by incentives. The mining machines get more and more powerful.”

Liam Bussell, Head of Communications at BANXA

Is a carbon neutral cryptocurrency possible?

With this in mind Bussell says a carbon neutral cryptocurrency is theoretically possible if the miners use clean energy rather than fossil fuels. 

Better, more energy-efficient blockchain mechanisms also could help this transition. 

Although Bitcoin mining does require large amounts of electricity, it’s ultimately up to the individual miner whether they use renewable energy to power this process. 

How does Bitcoin’s carbon footprint compare to traditional currency? 

On the other hand, it’s important that we keep these discussions in the perspective of our current systems. 

Rory Manchee from Brave New Coin argues that traditional fiat currencies also use considerable amounts of energy to mine and process the materials used in the production of notes and coins. 

So how does Bitcoin stack up? 

Let’s take VISA as an example. Digiconomist reports that Bitcoin uses far more energy than VISA. Also, the energy used by VISA is relatively “greener” than the energy used by the Bitcoin mining network. 

“If we“We could just realise that the current banking system uses vastly more power,  and H&M and Nike get cotton from China and that damages the environment too. If we look at this objectively, with bias, blockchain doesn’t use that much electricity.”

Liam Bussell, Head of CommuLIAM BUSSELL, HEAD OF COMMUNICATIONS AT BANXA

How can cryptocurrencies reduce their energy output?

The reason that Bitcoin mining is so energy-intensive is majorly down to a process called proof-of-work.

However, some experts are already in the process of replacing this with the more energy-efficient proof-of-state. In this model, coin owners create the blocks rather than the miners. This negates the need for the computational heavy-lifting we currently see.

Are all cryptocurrencies equally harmful to the environment? 

Different types of cryptocurrency are mined in different ways. Therefore, some currencies are more energy-reliant than others.

For example, Ethereum mining uses far less energy than Bitcoin mining.

Ethereum also has plans to change its proof-of-work algorithm to an energy efficient proof-of-stake algorithm called Casper. 

Natasha is an Associate Producer at ticker NEWS with a Bachelor of arts from Monash University. She has previously worked at Sky News Australia and Monash University as an Online Content Producer.

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U.S. ambassador responds to NATO criticism at Munich Security Conference

At Munich Security Conference, U.S. NATO ambassador discussed defense autonomy, hybrid warfare, and transatlantic cooperation amid rising tensions.

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At Munich Security Conference, U.S. NATO ambassador discussed defense autonomy, hybrid warfare, and transatlantic cooperation amid rising tensions.


At the Munich Security Conference, the U.S. ambassador to NATO faced tough questions on global order as European allies explored greater defense autonomy amid rising geopolitical tensions. The discussion highlighted the challenges NATO faces in maintaining unity while responding to evolving threats.

The ambassador addressed criticisms directly, emphasizing the importance of transatlantic cooperation and NATO’s role in ensuring international security. European nations voiced concerns about independent defense capabilities and the impact of hybrid warfare from Russia on regional stability.

Oz Sultan from Sultan Interactive Group provides analysis.

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#MunichSecurityConference #NATO #GlobalSecurity #DefenseAutonomy #Geopolitics #TransatlanticAlliance #HybridWarfare #USForeignPolicy


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Israeli President Herzog visits Australia amid rising antisemitism

Israeli President Herzog’s Australia visit strengthens solidarity and shared values amid recent attacks on the Jewish community.

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Israeli President Herzog’s Australia visit strengthens solidarity and shared values amid recent attacks on the Jewish community.


Israeli President Isaac Herzog’s visit to Australia marks a significant moment of solidarity between the two nations, especially following recent tragic attacks affecting the Jewish community. The visit underscores shared democratic values and a commitment to combating antisemitism.

Professor Tim Harcourt from UTS discusses the deeper significance of the visit, including the Australian government’s message and the broader implications for Jewish Australians. The timing, following the Bondi attack, highlights the sensitive context in which this diplomatic engagement occurs.

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Rebuilding Gaza: Lessons from the Phoenix Plan

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What will a rebuilt Gaza look like? The competing visions for the Strip’s future

A girl walks along a street in Gaza to get food during the war between Hamas and Israel.
Jaber Jehad Badwan / Wikimedia Commons, FAL

Timothy J. Dixon, University of Reading; University of Oxford

Following a visit to Gaza in January, the UN undersecretary general, Jorge Moreira da Silva, called the level of destruction there “overwhelming”. He estimated that, on average, every person in the densely populated territory is now “surrounded by 30 tonnes of rubble”.

This staggering level of destruction raises urgent questions about how, and by whom, Gaza should be rebuilt. Since 2023, a variety of reconstruction plans and other initiatives have tried to imagine what Gaza could look like when the conflict ends for good. But which of these visions will shape Gaza’s future?

The Israeli government’s Gaza 2035 plan, which was unveiled in 2024, lays out a three-stage programme to integrate the Gaza Strip into a free-trade zone with Egypt’s El-Arish Port and the Israeli city of Sderot.

AI renderings show futuristic skyscrapers, solar farms and water desalination plants in the Sinai peninsula. The plan also shows offshore oil rigs and a new high-speed rail corridor along Salah al-Din Road, Gaza’s main highway that connects Gaza City and Rafah.

The US government has proposed a similar futuristic vision for Gaza. Its August 2025 Gaza Reconstitution, Economic Acceleration and Transformation Trust plan shows a phased series of modern, AI-powered smart cities developed over a ten-year time frame. The plan, which would place Gaza under a US-run trusteeship, suggested that poor urban design lies at the heart of “Gaza’s ongoing insurgency”.

Jared Kushner presenting the ‘Gaza Riviera’ Project at World Economic Forum in Davos, January 2026.

The latest iteration of this vision was unveiled by Donald Trump’s son-in-law, Jared Kushner, at the recent World Economic Forum in Davos.

He presented slides showing Gaza reconstructed as a “Riviera” of the Middle East, with luxury beachfront resorts, gleaming tower blocks, residential zones and modern transport hubs. Kushner suggested it was “doable” to complete the construction of a “new” Rafah city in “two to three years”.

It has been reported that the US and Israeli visions are heavily influenced by US-based economics professor Joseph Pelzman’s economic plan for Gaza. This plan, Pelzman said on a podcast in 2024, would involve destroying Gaza and restarting from scratch.

In contrast to the US and Israeli visions, the February 2025 Gaza “Phoenix” plan includes input from the people of Gaza. It has a much stronger focus on maintaining and reconstructing the existing buildings, culture and social fabric of the enclave.

The plan was developed by a consortium of international experts together with professionals and academics from Gaza, the West Bank and the Palestinian diaspora, and suggests a reconstruction and development phase of at least five years.

Other plans from the Arab world take a more technocratic view of reconstruction, but still have a short timescale for reconstruction. These include a five-year plan by the United Arab Emirates-based Al Habtoor Group, which promises to grant 70% of ownership in the holding company that will manage Gaza’s reconstruction to the Palestinians.

Feasibility of rebuilding Gaza

So, how feasible are these different visions and how inclusive are they for the people of Gaza? Rebuilding cities after war takes time and money, and also requires local resources. Even in China, a country with plentiful resources and abundant skilled labour, major new cities are rarely completed in less than 20 years.

And in Gaza rebuilding will be complicated by the fact that there are now 61 million tonnes of rubble there, as well as other hazardous debris such as unexploded munitions and human remains. This will need to be removed before any reconstruction can commence, with the UN estimating that clearing the rubble alone could take as long as 20 years.

For comparison, the Polish capital of Warsaw experienced a similar level of destruction during the second world war and it took four decades to rebuild and reconstruct the city’s historic centre. The time frames for reconstruction outlined in all of the plans for Gaza are far shorter than this and, even with modern construction methods, are unlikely to be feasible.

The US and Israeli visions also fail to include Palestinians in the planning of Gaza’s future, overlooking any need to consult with Gazan residents and community groups. This has led critics to argue that the plans amount to “urbicide”, the obliteration of existing cultures through war and reconstruction.

Reports that suggest Gazan residents will be offered cash payments of US$5,000 (£3,650) to leave Gaza “voluntarily” under the US plan, as well as subsidies covering four years of rent outside Gaza, will not have alleviated these concerns.

At the same time, the US plan does not propose a conventional land compensation programme for Gazan residents who lost their homes and businesses during the war. These people will instead be offered digital tokens in exchange for the rights to redevelop their land.

The tokens could eventually be redeemed for an apartment in one of Gaza’s new cities. But the plan also envisages the sale of tokens to investors being used to fund reconstruction. The Council on American-Islamic Relations, the largest Muslim civil rights and advocacy organisation in the US, says the “mass theft” of Palestinian land through the token scheme would amount to a war crime.

With their emphasis on community engagement and the repair and renewal of existing structures, the Phoenix plan and the other Arab-led visions are at least a step forward. But without a fully democratic consensus on how to rebuild Gaza, it is difficult to see how the voices of the Gazan people can be heard.

Whichever vision wins out, history shows that post-war reconstruction succeeds when it involves those whose lives have been destroyed. This is evidenced somewhat ironically by the US Marshall Plan, which funded the reconstruction of many European economies and cities after the second world war, and involved close engagement with civil society and local communities to achieve success.The Conversation

Timothy J. Dixon, Emeritus Professor in the School of the Built Environment, University of Reading; University of Oxford

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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