Soil-powered fuel cell promises cheap, sustainable water purification

Soil-powered fuel cell promises cheap, sustainable water purification

Soil microbial fuel cells as designed by researchers at the University of Bath. Credit: University of Bath

Engineers at the University of Bath have shown that it’s possible to capture and use energy created by the natural reactions occurring in microorganisms within soil.

A team of chemical and electrical engineers has demonstrated the potential of cheap, simple “soil microbial fuel cells” (SMFCs), buried in the earth to power an electrochemical … [more…]

Climate-Equitable Water

Climate-Equitable Water

The failure to meet basic needs for safe water and sanitation worldwide is one of the great tragedies of our age, with billions of people paying the price in illness and poverty. The international community and countless local activists are currently engaged in a renewed drive to end the global water crisis. As corporate executives, investors and politicians from around the world descend on New York City this week to … [more…]

Solar and wind energy preserve groundwater for drought, agriculture

Solar and wind energy preserve groundwater for drought, agriculture

Using drought-prone California as a case study, a research team shows that increased solar and wind energy can reduce the reliance on hydropower, especially during drought. Credit: Egan Jimenez, Princeton University

Solar and wind farms are popping up around the country to lower carbon emissions, and these renewables also have another important effect: keeping more water in the ground.

A new Princeton University-led study in Nature Communications is among the … [more…]

A Water-Smart Future Is Just Around the Block

A Water-Smart Future Is Just Around the Block

Many locations around the world are implementing inspirational projects to encourage the wise use of water while enhancing resilience to climate change and ensuring resource efficiency.

Harvesting stormwater runoff

The City of Santa Monica’s Los Amigos Park Storm Water Harvesting and Direct Use Demonstration Project involves capturing stormwater runoff from a storm drain near the park, pre-treating flows with a hydrodynamic separator, storing flows in a subsurface storage system, and … [more…]

Device that works like a lung makes clean fuel from water

Photo: Hydrogen fuels cells from water? Device that works like a lung makes clean fuel from water

A device inspired by human lungs can split water into oxygen and hydrogen – Agencja Fotograficzna Caro / Alamy By Chelsea Whyte

Human lungs move gas through a thin membrane, extracting oxygen and sending it into our blood stream. Now a device uses the same principle to power the reactions used for making hydrogen fuel.

Yi Cui at Stanford University and his colleagues set out to mimic human lungs to … [more…]