It might sound like science fiction, but a mix of scientists and venture capitalists are working on plans to block the sun to slow global warming.

This podcast is sponsored by Rio Tinto.

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Come foraging on the forest floor as we go looking for the secret ingredient that will make trees grow faster and stronger and more able to suck down carbon.

This podcast is sponsored by Rio Tinto.

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Melting of Arctic sea ice shapes as a critical tipping point in the battle against climate change. That’s why a new start-up is fighting back by making ice.

This podcast is sponsored by Rio Tinto.

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A new breed of builders are tackling the carbon footprint of high-rise buildings from every angle.

Guests include: Joe Karten (Built), Victor Rosenberg (ClearVue Technologies) and Tony Dragicevich (Capral Aluminium)

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Pat Symonds wrote the rules that will compel Formula 1 cars to run on carbon-neutral fuel from 2026. Big oil companies are now racing to find solutions.

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An Australian scientist reckons he can break green hydrogen's addiction to renewable energy and the world's biggest hydrogen bull has got onboard.

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Meet the scientists working to secure a place for coal in a net zero world.

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Electric motors and biofuels are competing for primacy as the aviation sector tries to decarbonise. We talk to those on the front line of both camps.

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Brick Lane's head brewer Jon Seltin reckons climate change is already changing the taste of beer, and amid a craft brewing boom he’s determined not to add to the problem.

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Centuries after colonial powers sailed the seven seas on nothing but wind, big corporates like BHP are pushing a wind renaissance through the shipping industry.

For more on the episode, visit the Tech Zero site on afr.com. AFR subscribers can also sign up for the weekly Carbon Challenge newsletter. 

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When Vince Allen decided to quit his PhD into a disruptive type of solar cell, it might have been the best business decision he ever made. Now his solar startup, Sundrive boasts rich-listers like Mike Cannon-Brookes onto its share register.

For more on the episode, visit the Tech Zero site on afr.com. AFR subscribers can also sign up for the weekly Carbon Challenge newsletter. 

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