Across the northern hemisphere the deciduous forests are changing.

环绕整个北半球，可以看到落叶林在不断变化。

This phenomenon occurs above the magnetic poles in the Northern and Southern hemisphere.

这种现象发生在北半球和南半球的磁极上方。

Meet Steve, a rare spectacle that hovers over the horizon in the Northern hemisphere.

来看看史蒂夫，这是北半球地平线上罕见的奇观。

Arctic terns begin their migration in the Northern hemisphere in the summer, which is breeding season.

北极燕鸥在夏季开始在北半球迁徙，这是繁殖季节。

And it correlated almost exactly with the last period of prolonged cold to strike the Northern hemisphere.

北半球也在这段期间进入了漫长的寒冷期。

" Without exception, positive temperature anomalies are expected over all land areas in the Northern and Southern Hemisphere."

“毫无例外，预计北半球和南半球所有陆地地区都将出现正温度异常。”

Global cooling was experienced by the entire northern hemisphere.

整个北半球都经历了全球降温。

Within the northern hemisphere, now sing without a flaw.

在北半球，现在和我一起唱，不要唱错哦。

In the southern hemisphere, they rotate clockwise and in the northern hemisphere, they rotate anticlockwise.

它们在南半球顺时针旋转，在北半球则逆时针旋转。

Some think there was an ocean in the northern hemisphere.

有些人认为在火星的北半球有海洋。