Aerial seeding is not a new idea.

空中播种并不是一个新想法。

One of many organizations around the world that practice cloud seeding.

这是世界上许多进行人工降雨的组织之一。

It's called " cloud seeding" and it involves getting the clouds to make more rain.

这被称为“人工降雨”，它包括让云产生更多的雨水。

Work with the soil before seeding or transplanting.

播种或移栽前要先整理土。

This would not be seeding them with Earth life.

并不是播种来自地球生命。

Cloud seeding technology has been around since the 1940s.

人工降雨技术在20世纪40代就已经出现了。

So is this a problem that cloud seeding could solve?

那么，人工降雨可以解决这个？

The first cloud seeding experiments took place in the 1940s.

第一次人工降水实验是在20世纪40代进行的。

This process involves cloud seeding – when various substances are put into clouds in an attempt to cause rain.

其中包括云种散播——将多种物质放入云中，通过催化作用产生降雨。

Done consistently the hope is that cloud seeding can help bank water.

一直以来，人们都希望人工降雨能够帮助蓄水。

In some areas, the cloud seeding created new snowfall where no natural snow existed.

在部分地区，播云带来了新的降雪，那里并没有自然降雪。

This could be solved by seeding the clouds above the Arctic with droplets of saltwater.

这个可以通过在北极上空撒盐水，帮助成云的方法来解决。

The star shoots most of its innards into space, seeding the galaxy with heavy elements.

这颗恒星把它大部分的“内脏”射入太空，在星系中植入重元素。

For now, national weather bodies have yet to endorse the practice of cloud seeding.

目前，国家气象机构尚未批准云催化的实践。

But proving the effects of cloud seeding on the ground has been a struggle.

但在地面上证明人工降雨的影响一直是个难。

Cloud seeding has been tested in parts of the United States since the 1940s.

自上世纪40代以来，美国部分地区一直在进行播云试验。

In 2017 the National Science Foundation funded a study to determine cloud seeding's effectiveness.

2017，国家科学基金会资助了一项研究，以确定云催化的有效性。

She called the results a " revelation" to helping understand the effectiveness of cloud seeding technology.

她称结果是“启示”，有助于理解播云技术的效果。

The group starts by collecting restaurants discarded oyster shells, drying them and then seeding them with oyster larvae.

这个小组首先收集餐馆丢弃的牡蛎壳，晾干，然后用牡蛎幼虫播种。

And soon after seeding, these flowers will die, not to be seen again for the next 12 years.

在授粉后不久，这些花将会死去，下次看到它绽放，还要再等 12 。