Science news articles about 'roadblocks to success'

... and geothermal power, biofuels, hydrogen and biomass, to name a few. For the hydrogen economy, one of the roadblocks to success is the hydrogen itself. Hydrogen needs to be purified before it can be ...

One of the hydrogen economy's roadblocks to success is the hydrogen itself. Hydrogen needs to be purified before it can be used as fuel for fuel cells, but current methods are not very clean or ...