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

Solution to energy storage may be beneath your feet

Anyone who has ever hot-footed it barefoot across the beach on a sunny day walks away with a greater understanding of just how much heat sand can retain. That ability is expected to play a vital role in the future, as technology ...

Energy & Green Tech

Fairly sharing the pains and the gains of energy systems

Our energy systems are characterized by two important injustices. First of all, not all people have the same degree of access to these systems (and their advantages). Secondly, the negative consequences of the systems—particularly ...

Energy & Green Tech

More range for electric vehicle batteries on the horizon

A seemingly simple shift in lithium-ion battery manufacturing could pay big dividends, improving electric vehicles' (EV) ability to store more energy per charge and to withstand more charging cycles, according to new research ...

Energy & Green Tech

'Lithium Valley': Inside California's 'white gold' rush

The Imperial Valley in southeastern California is emerging as a global hotspot for lithium: A new U.S. Department of Energy report confirms that the Salton Sea holds enough of the rare mineral to power over 375 million electric ...

Energy & Green Tech

Harvesting water from air with solar power

More than 2.2 billion people currently live in water-stressed countries, and the United Nations estimates that 3.5 million die every year from water-related diseases. Because the areas most in need of improved drinking water ...

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