As Hurricane Irma approached, doula Esther Louis helped a nine-months-pregnant client flee Florida to find safety in Georgia. At the time, she thought she was just being a “compassionate human being.” But that experience back in 2017 helped her recognize how people in her profession can help expectant families stay safe as the impacts of climate change accelerate. Esther tells us about a new program that’s training other doulas to do just that. Then, we hear how the warming planet is posing a growing danger for newborns worldwide.

Resignations. Calls for a hiatus. The expert group tasked with helping Ottawa cut emissions faces an existential crisis. We hear from Catherine Abreu, who quit the Net Zero Advisory Body, because it wasn’t consulted about the federal government’s pipeline deal with Alberta. Meanwhile Michael Bernstein, one of the few remaining advisors, says the group can balance climate policy with political reality, but it needs a reset first.

Warming temperatures mean more rats. Is rodent birth control part of the solution? Join us on the streets of Manhattan, Chicago and Vancouver as producer Molly Segal meets the people trying to stop rats from overtaking our world.

If you're a frequent flier, you may have noticed flights have been getting bumpier lately. A potential culprit? Climate change. CBC producer Julia Pagel finds out how warming temperatures are making air turbulence worse, and what can be done about it. But first, she takes us back to 2019, when dozens of passengers were injured after an Air Canada flight bound for Australia hit severe turbulence and had to make an emergency landing.

Even as the world warms, oil attracts conflict. Just look to Venezuela and Donald Trump’s moves to control the country’s vast reserves. We delve into the history of "petro-imperialism” and ask whether a planet powered by renewables would be any more peaceful.

From the Best of What On Earth – in remote northern communities, diesel is king. But breakthrough solar energy projects are underway that could begin to reduce fossil fuel reliance. We’re taking you to Nunavut where people are adding solar panels to small off-grid cabins and others are working on community-scale solar projects — so the diesel generators can finally be turned off and communities can hear silence once again, like their ancestors did.

From the Best of What On Earth – Come with us to California where entrepreneurs are sending balloons full of sulfur dioxide into the stratosphere. It’s a form of solar geoengineering known as stratospheric aerosol injection, and the company Make Sunsets isn’t waiting for scientific consensus before they launch. We hear about their business model, and then from the researchers who question both the science and ethics of the practice.

From the Best of What On Earth – Better transit service could help lower Canada’s emissions. But can more people get on board with buses, trains and subways? We hear how policy changes and behaviour “nudges” can make it happen.