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Why are scientists putting coffee into concrete?

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Scientists have devised a method to recycle used coffee grounds to improve the strength of  concrete.

Engineers at RMIT University have discovered a method to significantly enhance the strength of concrete by nearly 30% by incorporating processed coffee grounds into the construction material.

This approach involves transforming discarded coffee grounds into biochar, a lightweight residue reminiscent of charcoal. This biochar then replaces a portion of the sand that is typically an essential ingredient in concrete production.

The inspiration for this pioneering technique stemmed from a laudable motive – to combat coffee waste in workplaces, according to the research team behind the innovation.

In a noteworthy collaboration, the researchers are currently partnering with local councils to envisage upcoming infrastructure projects, including the construction of walkways and pavements, which will employ this revolutionary concrete.

One of the most promising environmental aspects of this method is its potential to diminish coffee waste ending up in landfills, in addition to easing the demand for natural sand, a vital resource extensively used in the construction industry.

The National Food Waste Strategy Feasibility Study reveals that around 3% of the country’s annual greenhouse emissions stem from food waste. With approximately 75,000 tonnes of coffee waste being generated annually, the newly developed technique could notably contribute to waste reduction efforts.

Termed as pyrolysis, the method involves subjecting coffee waste to temperatures of about 350°C. Remarkably, the engineering team has managed to make this technique more energy-efficient by conducting the process at lower temperatures than customary.

Through careful experimentation, the researchers ascertained that by substituting 15% of the sand conventionally employed in concrete production with coffee biochar, the resulting material exhibited a remarkable surge in strength – an impressive 29.3% increase.

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U.S. ramps up Cuba aid as energy crisis deepens

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The United States has announced an additional $6 million in humanitarian aid for Cuba, bringing total assistance since Hurricane Melissa struck the island in October to $9 million. The new relief package will focus on Cuba’s eastern provinces, including Holguín, Granma, Santiago de Cuba, and Guantánamo, providing staples like rice, beans, pasta, canned tuna, and solar lamps. U.S. officials said embassy staff will monitor distribution to prevent the government from diverting supplies.

The announcement comes amid worsening energy and fuel shortages. Cuba has faced widespread blackouts, leaving millions without electricity in several provinces, while rising food prices and limited fuel supplies have intensified humanitarian pressures. Officials warn that without sufficient oil imports, hospitals, transport, and essential services could be severely affected. The crisis has escalated following U.S. restrictions on Cuba’s oil shipments and Venezuela’s inability to supply fuel, forcing Cuba to turn to Mexico as its primary energy partner.

Humanitarian situation

Cuba’s President Miguel Díaz‑Canel accused the U.S. of imposing an “energy blockade,” while Mexican officials work to deliver fuel without triggering U.S. tariffs. Díaz‑Canel expressed willingness to engage in dialogue but insisted talks must respect Cuba’s sovereignty. U.N. Secretary-General António Guterres has voiced serious concern, warning that the humanitarian situation could deteriorate further if oil supplies remain restricted.

As Cuba struggles to balance disaster recovery with an ongoing energy crisis, the international community faces a delicate challenge: providing humanitarian support while navigating complex geopolitical tensions.


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SpaceX expands Starlink with phone plans and satellite tracking ambitions

SpaceX expands Starlink with a mobile device and space tracking, raising concerns over revenue and US government reliance.

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SpaceX expands Starlink with a mobile device and space tracking, raising concerns over revenue and US government reliance.

SpaceX is pushing Starlink beyond internet from space, with plans underway for new consumer facing services that could reshape the telecom landscape.

The company is reportedly exploring a Starlink mobile device, positioning it as a potential rival to established smartphone players as it looks to extend its reach from orbit to everyday tech.

Starlink has become SpaceX’s financial powerhouse, generating an estimated $8 billion in revenue last year, with fresh trademark and patent filings signalling even more ambitious expansion ahead.


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Oil prices surge as U.S.-Iran tensions escalate

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Crude oil prices jumped over 3% on Wednesday as U.S.-Iran nuclear talks showed signs of faltering, pushing WTI futures above $65 per barrel. Axios reported disagreements over the venue and scope of Friday’s talks, while President Trump warned Iran’s supreme leader to “be very worried,” stoking fears of military escalation.

Tensions in the Persian Gulf added to the volatility. A U.S. F-35C shot down an Iranian drone near the USS Abraham Lincoln, and Iranian vessels threatened a U.S.-flagged tanker in the Strait of Hormuz. The USS McFaul escorted the tanker to safety, highlighting the region’s fragile oil supply routes.

Despite the clashes, nuclear talks will go ahead on Friday in Oman, but uncertainty continues to drive oil market volatility, with traders closely watching both diplomatic and military developments.

#OilPrices #IranUS #NuclearTalks #PersianGulf #WTI #EnergyMarket #Geopolitics #OilSupply


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