Why a hydrogen economy doesn't make sense

In a recent study, fuel cell expert Ulf Bossel explains that a hydrogen economy is a wasteful economy. The large amount of energy required to isolate hydrogen from natural compounds (water, natural gas, biomass), package ...

Passive solar windows heat up in cold weather

Researchers have developed a way to transform ordinary windows into solar-powered heaters that use the sun's energy to increase the window temperature by up to 8 K (nearly 15 °F) in cold weather. The researchers expect that ...

Renewable Energy Made by Mixing Salt and Fresh Water

(PhysOrg.com) -- When a river flows into the sea, the location is more than just a haven for water commerce. The mixing of fresh and salt water that occurs at an estuary also dissipates energy, as the different salinity waters ...

Micro Fuel Cells Get Closer to Replacing Batteries

(PhysOrg.com) -- Mobile electronics have the potential to offer digital luxuries beyond our imagination, but they will never get there on today’s lithium ion batteries. Power has been the weak spot in the development of ...

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