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A worker inside the vacuum vessel of the DIII-D fusion reactor

Physics

Nuclear fusion experiment overcomes two key operating hurdles

Two important barriers to a stable, powerful fusion reaction have been leapt by an experiment in a small tokamak reactor, but we don’t yet know if the technique will work in larger devices

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Environment

Wind turbines based on condor wings could capture more energy

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Earth

Geoscientists are using telecom 'dark fibres' to map Earth’s innards

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We live in a cosmic void so empty that it breaks the laws of cosmology

Space

We live in a cosmic void so empty that it breaks the laws of cosmology

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Space

There are hints that dark energy may be getting weaker

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Space

Astronomers have found what may be the smallest galaxy ever

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Wireless power from space

Environment

Five climate megaprojects that might just save the world

Features

Physics

Rethinking space and time could let us do away with dark matter

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Environment

Storm-proofing 1% of power lines protects entire grid from blackouts

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Environment

Chemical injection brings dying batteries back to life

Researchers restored degraded lithium-ion batteries to nearly full capacity by injecting them with a chemical that creates more charged particles inside them

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Environment

Battery breakthrough lets electric cars run longer in extreme cold

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Technology

Bitcoin creator Satoshi Nakamoto dismissed early climate concerns

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Environment

A container ship just tested a system to capture its own CO2 emissions

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Environment

Inside the Brooklyn start-up making clean jet fuel with captured CO2

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