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  1. Hydrogen - Wikipedia

    Hydrogen is a chemical element; it has the symbol H and atomic number 1. It is the lightest and most abundant chemical element in the universe, constituting about 75% of all normal matter.

  2. Hydrogen | Properties, Uses, & Facts | Britannica

    Nov 27, 2025 · The earliest known chemical property of hydrogen is that it burns with oxygen to form water; indeed, the name hydrogen is derived from Greek words meaning ‘maker of water.’

  3. Hydrogen explained - U.S. Energy Information Administration (EIA)

    Hydrogen occurs naturally on earth in compound form with other elements in liquids, gases, or solids. Hydrogen combined with oxygen is water (H 2 O). Hydrogen combined with carbon forms different …

  4. Hydrogen - Department of Energy

    Nov 28, 2025 · Hydrogen has been described as the “Swiss army knife” of energy because it plays a key role in several sectors where there are limited or no viable alternatives (including in applications …

  5. Hydrogen - Element information, properties and uses | Periodic Table

    Element Hydrogen (H), Group 1, Atomic Number 1, s-block, Mass 1.008. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.

  6. Hydrogen Energy Explained: Everything You Should Know

    Hydrogen energy is emerging as a key clean fuel in the global move toward sustainability, offering the potential to decarbonise industries, transport and energy systems. This article, brought to you by the …

  7. Hydrogen Basics | NLR

    3 days ago · Hydrogen can be both an energy carrier and a primary energy source, if it is extracted from the ground as naturally occurring hydrogen. As an energy carrier, it stores and transports energy …

  8. Why Hydrogen Still Matters In A Warming World - Forbes

    Nov 27, 2025 · Hydrogen won’t save the planet alone, but we won’t reach net zero without it. The solutions are seen as costly today, but will be indispensable tomorrow.

  9. Hydrogen Factsheet - Center for Sustainable Systems

    Hydrogen is a feedstock and energy carrier used in multiple sectors. Global hydrogen demand reached 97 Mt in 2023, a 2.5% increase from 2022, with 10 Mt in the U.S. 1,2 Hydrogen is the most abundant …

  10. What Are the 5 Main Uses of Hydrogen? - Hydrogician

    May 16, 2025 · Hydrogen isn’t just a buzzword—it’s transforming industries from energy to aviation. Hydrogen is primarily used in refining, ammonia production, fuel cells, metal treatment, and rocket …