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Environment

How green hydrogen could power industries from steel-making to farming

Many industries are eyeing up hydrogen as a source of clean energy, but with supplies of green hydrogen limited, we should prioritise the areas where it could have the most positive impact on carbon emissions, say researchers

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Space

Is the expansion of the universe slowing down?

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Environment

Solar energy is going to power the world much sooner than you think

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Technology

There's a simple way we could drastically cut AI energy use

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Environment

Top 250 oil and gas firms own just 1.5% of the world's renewable power

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Environment

Why solar power is the only viable power source in the long run

Analysis

Environment

Is Africa about to see the solar energy boom it needs?

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Environment

We could get most metals for clean energy without opening new mines

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In the village of Tshabula, villagers search for cobalt and copper in the waste tailings dumped by the lorries of the Chinese company Commus, which extracts minerals from one of the town's largest open-cast mines.

Environment

Mining for renewable tech inflicts huge damage. Is there a solution?

Features

Environment

We can repurpose retired coal plants to produce green energy

Piles of dirt can cheaply store renewable energy as heat – and that stored energy can reactivate the machinery of retired coal power plants, letting them provide backup power for the electricity grid

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Environment

Rust-based battery connects to an electricity grid for the first time

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Environment

California bets on iron-salt battery power to protect against wildfire

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Environment

AI demand could drive up US electricity bills – even if it fizzles

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Environment

Could old mines host all the solar energy we need?

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