Energy & Green Tech

Salt battery harvests osmotic energy where the river meets the sea

Estuaries—where freshwater rivers meet the salty sea—are great locations for birdwatching and kayaking. In these areas, waters containing different salt concentrations mix and may be sources of sustainable, "blue" osmotic ...

Energy & Green Tech

At the end of the road, EV batteries have no particular place to go

Transport is at a crossroads as we move away from filling our tanks with liquid fossil fuels and powering them up from battery charging points. However, the lithium-ion batteries that displaced those tanks have a finite lifespan ...

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