Not one other planet similar to our own. So could it be that Earth really is unique?没有任何一个星球与我们的地球相似。所以地球真的是独一无二的吗？In this programme, scientists will tell the fascinating story of how Earth developed, how this ball of ice and dust became the planet of lif...
athere's an elevator,but she always takes the stairs. 有电梯,但她总采取台阶。[translate] a请输入您需要叹息 Please input you to need to sigh[translate] aarms.bingo, arms.bingo,[translate] ais about what planet you're from 是关于什么行星您是从[translate]...
The moon's soil, known as regolith, is "a really good insulator," Monnier said. So, in both light and darkness, the moon's surface retains heat or cold. These temperature changes vary all over the moon's surface. Although the regolith is a good insulator, it's not a good conductor....
No one else, no matter how much we talk or cry, can pull us through the anxious hours of soul repair and growth. It is our own fire within that needs rekindling, guarding against the winds that would blow it out and leave us dark, cold and helpl...
Without water vapor, the planet would be much colder and less hospitable. Where Does Humidity Come From? Humidity is a natural part of our atmosphere and originates from various sources. The primary source of atmospheric humidity is the evaporation of water from large bodies of water, such as...
and those animals are contributing food to humans as well. So what we see is that that animal-human interface is becoming closer and closer together. And this intensive agriculture of animals and this intensive increase in human populations living together on the same planet is really a melting...
That question, repeated across a dozen environmental issues and across our diverse planet, is what will ultimately determine whether the human race is living beyond its ecological means as it pursues economic revival. 出自-2016年6月阅读原文 Asked what they would like to change in the world, the...
It is the first of its kind in 40 years. 1 Oceans cover about 71% of the earth’s surface, and are home to all kinds of animals and plants. Healthy oceans play a very important role in a healthy planet. 2 Overfishing (过度捕捞) has had terrible influence on many kinds of fish...
Geography also makes a difference, Zee said. When scientists say the climate is warming, they mean for the entire planet -- not in a particular city, state or county, Zee said. "The point is that climate -- all weather days all over the world -- on ave...
One is a layer of a mineral called iridium, which exists in many locations on the planet at depths equated with the end of the Cretaceous period. Iridium is more common in space debris than on Earth, so the huge impact of an object from space could have caused this effect. Satellite ima...