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听力等级

科学研究   

2024-08-29   Intermediate
The Real Killer Of The Dinosaurs, Part One

Keywords:

A ruthless murder was committed! Someone killed the dinosaurs and we have the murderer! Witnesses say that an Everest-sized asteroid hit Earth, devastated the planet and caused a mass ex...

一场无情的谋杀!有人被杀 恐龙和凶手!证人 说珠穆朗玛峰大小的小行星撞击 地球,摧毁了地球并导致 一场大规模灭绝。一个简单而迷人的 和令人信服的解释。或。。。是吗? 在过去的几年里,新的证据 重振了指向 对第...


2024-08-27   Intermediate
An Indirect Way to Tame Cancer, Part Three

Keywords:

Rakesh Jain: We said – we asked the questions what molecules in our body control the production of collagen, and the growth factor that is the master regulator of collagen is known as TGF beta, transf...

Rakesh Jain:我们说——我们问了我们体内的哪些分子控制胶原蛋白的产生,而作为胶原蛋白主要调节因子的生长因子被称为 TGF β,即转化生长因子 β。因此,我们开始在文献中寻找 FDA 批准的药物可以阻断 TGF β 的活性,事实上,...


2024-08-27   Video
What Would Happen If We Terraformed the Sahara Desert

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In an effort to fight climate change, the Sahara Desert could be going green... literally. Plans are being made to terraform the entire Sahara desert; changing it from a dry, barren land...

为了应对气候变化, 撒哈拉沙漠可以 走向绿色......按照字面。 正在制定 terraform 计划 整个撒哈拉沙漠; 把它从干燥、贫瘠的 景观到郁郁葱葱的绿色空间。 如果成功,则 转换可以删除 每年...


2024-08-25   Intermediate
An Indirect Way to Tame Cancer, Part Two

Keywords:

Rakesh Jain: But in addition, even if the drugs get into the hypoxic region, somehow you could do that, they stop functioning there, because a lot of the drugs, for them to function they require oxyge...

Rakesh Jain:但除此之外,即使药物进入了缺氧区域,不知何故,它们也会在那里停止运作,因为很多药物需要氧气才能发挥作用。 辐射也是如此;放射疗法是最常见的癌症治疗方法,需要氧气。因为辐射的作用是将氧转化为所谓的氧自由基,这就是导致...


2024-08-25   Video
What Would Happen If Earth Was Inside of a Nebula

Keywords:

If you could teleport the Earth to any place in the Universe, what would you want to look at in the night sky? The bright explosion of a supernova? A black hole passing over your house?...

如果你能传送地球 到宇宙中的任何一个地方, 你想看什么 在夜空中? 超新星的明亮爆炸? 一个黑洞从你的房子上经过? 星云怎么样? 这朵华丽的气体云近距离看什么? 如果地球在里面,地球会如何变化? ...


2024-08-23   Intermediate
An Indirect Way to Tame Cancer, Part One

Keywords:

Steve Mirsky: Cancer therapy is almost always looked at as a molecular issue. When we hear about a new cancer drug it’s usually a molecule. And your attempts to deal with cancer obviously are molecu...

Steve Mirsky:癌症治疗几乎总是被视为一个分子问题。当我们听说一种新的抗癌药物时,它通常是一种分子。您处理癌症的尝试显然本质上是分子的,但它们是在结构考虑和物理学的背景下进行的。 Rakesh Jain:是的。我们的想法是,物理...


2024-08-21   Intermediate
The Paradox of an Infinite Universe, Part Two

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How big would such a hyper donut universe be? Well, because of its strange geometry, actually this is kind of the smallest possible universe – potentially just a few times bigger than th...

这样一个超级甜甜圈宇宙会有多大 是?嗯,因为它的几何形状很奇怪, 实际上,这是尽可能小的 宇宙 – 可能只是大几倍 而不是可观测的宇宙。但它可能会 也要 WAY, WAY GREATER。不知道。 还行。对于有限的宇...


2024-08-21   Video
What Would Happen If We Built A Ringworld In Space

Keywords:

The Earth may not be our home forever. Eventually, we may have to leave. What if instead of finding a potentially habitable exoplanet light-years away, we stayed in our Solar System a...

地球可能不会永远是我们家。 最终,我们可能不得不离开。 What if 而不是找到 可能宜居的系外行星 光年之外, 我们待在太阳系里 并建造了一个如此巨大的栖息地 我们永远不能让它人口过多? 这就...


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