耶格则坚决维护这个年代，称在这一位置发现的其他化石和岩石中的磁场细节都支持所作的解释。
Jaeger defended the ages, noting that other fossils they discovered at the site and magnetic details in the rocks supported their interpretation.
—洛斯阿拉莫斯国家实验室的地质学者沃德·盖布·瑞尔采集化石挖掘地点上层和下层的火山土壤层分析测定其年代在440万年前。
Geologist Giday WoldeGabriel of Los Alamos National Laboratory was able to use volcanic layers above and below the fossil to date it to 4.4 million years ago.
在上世纪70年代，和最近这些年一样，化石燃料的高价格引起对可再生能源的兴趣不断增加。
In the 1970s, just as in recent years, high prices for fossil fuels led to rising interest in renewables.
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