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Hello, this is 6 Minute English from BBC Learning English. I'm Neil.

And I'm Sam. It's hard to feel positive when you hear about climate change, don't you think, Neil?

Yes, according to the UN's COP26 conference,

we're heading for a catastrophic global temperature rise of three degrees by the end of this century.

Fires are blazing from the Amazon to the Arctic, and even if we stopped burning all fossil fuels

tomorrow, it would take decades to feel the effects. It's all very depressing.

I agree, but there is hope that catastrophes can be avoided thanks to some amazing ideas

by some very imaginative scientists. In this programme, we'll be discussing Geoengineering,

the name for a collection of new scientific plans to remove carbon from the atmosphere

and stop global warming. Also called climate repair,

Geoengineering is still in the experimental stages. Some technologies are controversial because

they interfere with natural climate systems and others may not even be possible.

One ingenious idea to call the planet involves spraying diamond dust in the sky

to deflect the sun's rays. Amazing, but before we find out more,

I have a question for you, Sam. Spraying diamond dust in the sky sounds futuristic,

but in the 1960s, there was a band who wrote a song called Lucy in the Sky with Diamonds,

but which band? Was it A, the Rolling Stones, B, the Beach Boys, or C, the Beatles?

I think most people would say the answer is C, the Beatles.

Okay, we'll find out the answer later in the programme.

Now, throwing diamonds in the sky might sound crazy,

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