Greetings:

My name is Carl Zimmer. I'm a journalist, and I've been asked by National
Geographic to write an article about how scientists determine ages of
things ranging all the way from the universe to modern humans. Much of the
article will be about geochronology, focusing on some particular research
projects that demonstrate new techniques and address important questions
about the history of the Earth. Obviously a magazine article can't
encompass such a vast field, but it can at least give a taste of what the
work is like. I'm looking into several possibilities (a few examples I'm
looking into are the ages of the oldest cratons, of mountain ranges such as
the Rockies, of major eruptions and of earthquakes.I'd be grateful for any
suggestions)--but I'd also be deeply grateful for any suggestions. Since
I'll be doing the research for the story in the  next four months or so,
any project with active field work involved in the near future would be
ideal.

Thank you for your time.

Sincerely,

Carl Zimmer

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