... born.¹

No, I wasn't born in the Dark Ages, just the 1950's. OK. Maybe that was the dark ages.

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... (left)).²

Two years ago the U.S. population stood at 307 million, and the world population stood at a little under 6.8 billion.

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... now,³

And as many as the entire planet had when I was born.

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... leader⁴

The Economist calls the editorials that lead off each edition ``leaders.''

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... biology⁵

There weren't any ecology and evolutionary biology departments until the mid 1960s, so far as I am aware.

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... and systematics.⁶

Aldo Leopold was appointed Professor of Game Management at the University of Wisconsin in 1933, the same year he published Game Management.

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... field.⁷

It's worth noting, however, that the journal Biological Conservation began publishing in 1968. Moreover, many biologists working in resource-oriented departments have regarded what they do as conservation biology since at least the 1930s. Aldo Leopold was a wildlife biologist.

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... change⁸

We will discuss how climate change affects conservation planning, but we won't talk about cap and trade or target levels of CO$_2$ in the atmosphere.

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... conservation⁹

We will obviously deal with politics to a limited extent. It's unavoidable when talking about conservation issues. Our focus, however, will be on the biological issues associated with conservation, not the political ones.

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