Why in news?
The world's largest natural hydrogen reserve was discovered beneath the soil of Folswiller in the Moselle region of France.

Key points:
- This reserve contains about 46 million tonnes of white hydrogen, which is estimated to be worth $92 trillion.
- This huge reserve of white hydrogen was found at a depth of 1,250 metres.
- This discovery was made by scientists from the Georesources Laboratory and CNRS, who were originally looking for methane.
- White hydrogen is naturally occurring and its extraction does not cause CO₂ emissions.
- This discovery can increase France's energy self-sufficiency and reduce dependence on fossil fuels.
- If this reserve is used properly, it can revolutionise the global energy sector.
Hydrogen:
- Hydrogen is a chemical element with the symbol H and atomic number 1.
- It is the lightest and most abundant element in the universe.
- Hydrogen gas (H₂) is usually found in molecular form.
- It is colorless, odorless and highly flammable.
White Hydrogen:
- White hydrogen is also called natural hydrogen.
- It is found naturally below the surface of the earth.
- It is formed naturally without any human process.
- It is considered the purest and green energy source of hydrogen.
Types of Hydrogen:
Type of Hydrogen
|
Source
|
Environmental Impact
|
White Hydrogen
|
Naturally underground
|
Zero carbon emissions
|
Green Hydrogen
|
Electrolysis of water (using renewable energy)
|
Zero carbon emissions
|
Blue Hydrogen
|
Produced from natural gas (with CCS technology)
|
Partially clean
|
Brown/Black Hydrogen
|
Produced from coal or natural gas
|
High carbon emissions
|