CLEAN: Former steel town's revival -- the backdrop to G20

The video discusses childhood memories related to time and weather, Pittsburgh's green transformation attracting businesses and creative individuals, the use of natural ventilation systems, and a unique bridge in Pittsburgh.

What unusual phenomenon did the narrator experience during midday as a child?

• It was very windy.

• It was snowing.

• It was dark.

• It was extremely hot.

What happens to the skin during summer according to the narrator?

• It turns blue.

• It becomes pale.

• It turns orange.

• It becomes green.

What has the green transformation of Pittsburgh attracted?

• More historical landmarks.

• More sports teams.

• More companies and creative people.

• More tourists.

How many days a year can Pittsburgh use its natural ventilation system without additional heating or cooling?

• About 50 days.

• About 100 days.

• About 365 days.

• About 200 days.

What is unique about the bridge mentioned in the transcript?

• It is the longest bridge in the world.

• It is made entirely of glass.

• There are only seven of them.

• It is the oldest bridge in Pittsburgh.