Name: What If We Could Refreeze the Arctic?
Uploaded: 2020-04-04T07:42:44.000Z
Duration: 6 min 16 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

Basic passive voice

by geoengineering some artificial icebergs?

that shrink in the summer and grow back in the winter.

and the weather patterns around the globe

would change in a very unpredictable way.

We could bring the ice back to the Arctic

with the help of huge wind-powered pumps.

The pumps would spread seawater onto the glaciers,

where it would freeze and form a new layer of ice.

would add another meter (3.2 feet) of thickness to the ice caps.

some governments might consider the price too high.

by reflecting the Sun's energy back into space

We could help the young Arctic ice to reflect more sunlight

by covering it with small, shiny silica microspheres.

These powder-like microbeads aren't toxic,

and their chemical and physical properties

to sprinkle 25,000 square km (45,000 square mi) of the Arctic.

But that would only cover less than 1% of all the ice there.

millions of tons of silica over the Arctic

that would sink to the bottom of the ocean when the ice melted.

and try cutting off the Sun's rays by using the clouds.

to reflect the sunlight efficiently enough.

how to deliver an ultra-fine seawater mist

First, we'd dip submarines below the surface of the ocean

and then a giant freezing machine would form icebergs

5 meters (16 feet) thick and 25 meters (82 feet) wide.

the amount of energy required to power the operation,

might negate any benefits of restoring the Arctic ice.

until eventually there wouldn't be any ice left at all.

and release more carbon dioxide into the atmosphere.

That would increase the global temperatures even further.

Some scientists even believe that the ice-free Arctic

would bring harsher winters to Europe and North America.

polar bears would be forced to swim around

Subtitles ListPlay Video

What If We Could Refreeze the Arctic?

gross

force

artificial

amount