乔斯丁利用砾石中金子与磁铁矿密切的共生关系，曾经用磁力仪在阿拉斯加寻找金矿。
Joesting has used the magnetometer to locate gold in Alaska, taking advantage of the close association of gold and magnetite in gravels.
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。
Jonathan Caulkins and Angela Hawken, occasional co-authors, teach at Carnegie Mellon and Pepperdine universities respectively.
当天出席圣诞树点灯仪式的艺人包括歌手雪儿·克罗、嘻哈歌手“凡夫俗子”(Common)和“美国偶像”冠军乔丁·斯帕克斯，他们的表演让观众倾倒。观看表演的观众们穿着棉衣，戴着围巾，裹得严严实实。
Performers including singer Sheryl crow, hip hop artist Common and "American Idol" winner Jordin Sparks dazzled the crowd, bundled in coats and scarves.
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