Jonathan Caulkins and Angela Hawken, occasional co-authors, teach at Carnegie Mellon and Pepperdine universities respectively.

乔纳森·考金斯和安吉拉·霍肯不时合著作品，分别在卡内基·梅隆大学和佩伯丁大学任教。

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And street prices for pot in places where there is no legal outlet for it are generally higher than in regulated markets, Mr. Caulkins says.

WSJ: The Pot Business Suffers Growing Pains

Most of the pot consumed in the U.S. is grown outdoors in Mexico by low-wage laborers, with no need for lights or air conditioning, says Jonathan Caulkins, a professor at Carnegie Mellon University who studies marijuana legalization.

WSJ: The Pot Business Suffers Growing Pains