|
1
|
hydrogen
|
scientific community
|
Hydrogen is a crucial element in sustainable energy and molecular interactions, widely accepted in scientific research.
|
5
|
|
2
|
hydrogen
|
Developing countries
|
Hydrogen is not commonly used or associated with energy production in developing countries.
|
1
|
|
3
|
hydrogen
|
Germany
|
In Germany, hydrogen is viewed as a promising and clean alternative fuel for vehicles and power generation.
|
1
|
|
4
|
hydrogen
|
Middle East
|
Hydrogen production and utilization is not widely discussed or mainstream in the Middle East as an alternative to fossil fuels.
|
1
|
|
5
|
hydrogen
|
Space exploration enthusiasts
|
Space exploration enthusiasts value hydrogen for its role in rocket fuel and energy generation.
|
1
|
|
6
|
hydrogen
|
United States
|
In the United States, hydrogen is viewed as a promising clean fuel for vehicles and power generation.
|
1
|
|
7
|
hydrogen
|
industrialized countries
|
In industrialized countries, hydrogen is used as fuel for hydrogen fuel cells and has potential as a clean energy source.
|
1
|