自然旅游   常速英语

Keywords:

Gorongosa National Park was famous for its lion population back in the 1970s, but then a civil war broke out in Mozambique, decimating most of the wildlife. In 2008, a massive ecosystem...

Keywords:

Birds do color in so many different ways，you have the blues and purples and the iridescences of hummingbirds. Meanwhile, the yellows reds and oranges and so what this project is going to do is basica...

Keywords:

So during the Ice Age, these huge sheets covering lots of land mass. Ice was incredibly thick, so mile-wide thicknesses of ice piled on top of land. And then the Earth starts to warm. ...

Keywords:

The ocean conveyor belt and the Gulf Stream. Ocean currents have a direct influence on our lives. They determine our weather, our climate, and much more. The ocean currents and wind system...

Keywords:

To live on Earth is to live as part of a network: a giant web where almost every creature depends on others for survival. These networks are so complex that it's difficult to predict how resilie...

Keywords:

Somewhere in the Universe is a small blue planet, the third rock from a star called the Sun, just one of billions of stars in a spiral galaxy known as the Milky Way. But where in the Universe i...

Keywords:

An epic journey lies ahead for this Arctic Tern, a Forty thousand mile flight from its Greenland spring nest to the same patch of rocky Antarctic ground as generations before. The Earth's magnetic fi...

Keywords:

When temperatures drop and the days get shorter, many animals wait out winter by hibernating or migrating to warmer climates. But honey bees do something a little different to stay cozy. They hu...