Kai Risdahl

Compared to a traditional savings account from a mega bank, which Schultz says offers an interest rate closer to zero.

I'm Daniel Ackerman for Marketplace.

If recent trends hold, this summer is going to be one of, if not the hottest on record, which is to say the climate crisis is getting more critical.

There are ideas big and small on what to do about that.

And among the bigger ones, the biggest probably, is dimming the sun.

The new season of our climate podcast, How We Survive, is all about some of those large-scale interventions.

Here's Marketplace's Amy Scott.

Just don't stand on the edge.

We don't want anyone dangling.

You're going to let go and just pull your hand back so that this doesn't catch your hand.

Go for it.

We don't.

I think I'm no more or less qualified to do geoengineering than anyone else who does geoengineering by getting onto a plane or turning on their gas-burning vehicle.

It's geoengineering whether we're helping or hurting the planet, whether we're warming or cooling the planet, it's still geoengineering.

Nobody is selling this as something that's magic.

Any of these interventions is going to cause harms, but...

We have the CO2 in the air.

The harm from climate change is real.

And it might make sense to do this, understanding that the benefits would be pretty large and the risks appear to be pretty small.

I think we have to understand that if we do this, this is a decision that will affect all life on the planet.