我们正在寻找各种方法推后我们知道的各种限制，一些最近的发现，有一个阿根廷的蚁群现在传播到了每一个大陆，除了南极洲有一个自我导向的机器人科学家搞出了一个发明。
We're finding all kinds of ways to push back the limits of what we know. Some recent discoveries: There's an ant colony from Argentina that has now spread to every continent but Antarctica.
新泽西州布拉德利海滩(Bradley Beach)的玛丽安娜·佩雷斯图尼克（Maryanne Preztunik），在她自己50岁的生日时，她享用了送给她的诞辰礼物- 让她从乌斯怀亚、阿根廷、到南极洲作一次往返性的远征旅行。
Maryanne Preztunik of Bradley Beach, New Jersey, took this photo while enjoying her 50th birthday present to herself--a roundtrip sailing expedition from Ushuaia, Argentina, to Antarctica.
南极之旅的游轮大多从阿根廷最南部小镇乌苏怀亚启程，最终停靠在南极洲边缘的南乔治亚岛。
Most cruises to Antarctica depart from the town of Ushuaia on the southernmost tip of Argentina and stop at Salisbury Plain on the sub-Antarctic island of South Georgia (pictured).
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