Jessica Tierney, a paleoclimatologist at the University of Arizona.

亚利桑那大学的古气候学家杰西卡·蒂尔尼说到。

Niels de Winter, paleoclimatologist at the Free University of Brussels in Belgium.

比利时布鲁塞尔自由大学的古气候学家尼尔斯·德温特说到。

Kathleen R. Johnson, a paleoclimatologist and geochemist at the University of California, Irvine, says the key to that discovery were stalagmites collected in a cave in northern Laos.

加州大学欧文分校的古气候学家和地球化学家凯瑟琳·约翰逊说，这一发现的关键是在老挝北部的一个洞穴中收集的石笋。

To catch up with University of Maine paleoclimatologist Karl Kreutz and his team, we hopped on a plane rigged with skis that landed right on the Ruth Glacier in the heart of the Denali National Park.

为了赶上缅因大学古气候学家 Karl Kreutz 和他的团队，我们跳上了一架装有滑雪板的飞机，飞机正好降落在 Denali 国家公园中心的露丝冰川上。