Energy & Green Tech

Lithium boom comes to Brazil's 'misery valley'

In a cloud of gray dust, a heavy-duty excavator loads a truck with stone blocks containing lithium, the "white gold" of the clean-energy revolution, which some hope will transform this parched, impoverished region of Brazil.

Engineering

Photocatalytic concrete for clean air in underground tunnels

The air quality in underground road tunnels tends to be worse than in other road environments due to the poor air circulation. To address this issue, researchers at the Korea Institute of Civil Engineering and Building Technology ...

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