On the left is M97 in the constellation Ursa Major, also known in the northern hemisphere as the Owl Nebula.

左边是M 97在大熊座，又称北半球的夜枭星云。

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There was a major flu outbreak, and a Tamiflu-resistant strain of seasonal flu established itself and then spread to the Northern Hemisphere, including to the United States, last winter.

当时出现了严重的流感爆发，抗达菲药物的季节性流感乘机而入，疫情一直扩散到了北半球的冬天，包括美国在内的广大地区。

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Population growth, pollution and invasive species are having a disastrous effect on species in the southern hemisphere, a major review by conservationists warns

自然资源保护者的重要回顾报告提出警告说，人口增长、环境污染以及外来物种正对南半球的物种产生灾难性影响。

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For Lula da Silva, Friday's announcement in Copenhagen, Denmark, that Rio de Janeiro will host the 31st Olympiad in 2016 signified a major achievement not only for his hemisphere (no city in South America has ever before hosted the games) but for him -- a former autoworker and union organizer who defied dizzying odds to become president.

CNN: Rio's victory is a victory for Lula da Silva, too

Chan indicated that a major factor in the decision was surveillance from countries in the Southern Hemisphere, where flu season is under way.

CNN: Swine flu 'not stoppable,' World Health Organization says

Among its major business units, DuPont managed to grow its agriculture revenues 4% on strength in the Southern Hemisphere.

FORBES: DuPont Takes It On The Chin As It Misses Estimates And Cuts Guidance