Hydrogen is the most widespread element and one of the building blocks of life. First appearing when the Big Bang created the universe, hydrogen is now part of human technologies that could change the future. People have used liquid hydrogen to send astronauts into space and hydrogen gas to drive families to the store. In this informative book, we'll explore the first element in the periodic table, looking at its properties and finding its hiding places. From our bodies to the Sun, hydrogen is everywhere.