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Technology

Recycled coffee grounds can be used to make stronger concrete

Using spent coffee grounds to replace some of the sand in concrete makes the material stronger and could reduce greenhouse gas emissions from coffee grounds in landfill

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Superconductors can levitate above a magnet

Physics

LK-99: Mounting evidence suggests material is not a superconductor

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LK-99's creators claim it is a superconductor at room temperature and pressure

Physics

Why it's so hard to tell if LK-99 is a room-temperature superconductor

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Technology

Thin reflective film that mimics butterfly wings can keep cars cool

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Gold nuggets - thin gold wafers can generate their own glow

Physics

Gold flakes glow when they are bathed in light and now we know how

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Superconductors can magnetically levitate

Physics

Scientists race to test claimed room-temperature superconductor

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Technology

Energy-storing concrete could form foundations for solar-powered homes

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Room temperature superconductors could be transformative for science

Physics

Room-temperature superconductors: Here's everything you need to know

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Supersonic cracks seem to be breaking the laws of physics

Physics

Supersonic cracks seem to be breaking the laws of physics

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LK-99 partially levitating

Technology

Room-temperature superconductor 'breakthrough' met with scepticism

Creating a material that perfectly conducts electricity at room temperature and pressure would be a big deal, but a research team's claims of creating one has attracted more scrutiny than optimism

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Physics

Scandium superconducts at the highest temperature for a pure element

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Environment

City in Sierra Leone covers buildings in mirrors to fight extreme heat

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Chemistry

3D-printed material glows green under pressure or friction

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Physics

Graphene shows record-breaking magnetic properties at room temperature

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