Special production processes are needed to make pipes for carrying hydrogen.

ECONOMIST: Tech.view: Hydrogen tries again | The

In chemistry, the syllabus is enlivened by exploring the processes behind creating special effects for the latest James Bond film.

BBC: Bringing on the brightest

Protect and restore the integrity of Earth's ecological systems, with special concern for biological diversity and the natural processes that sustain life.

CNN: Earth Charter sets course for sustainable living