Science & Environment
Toronto, New York and Washington top list of most polluted cities as wildfires burn
The fires have sparked a spat between the US and Canada, with Trump threatening renewed tariffs over the "filthy, polluted, and unhealthy air".
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How might we spot nukes in space? Audio, 27 minutes
What’s the point of having a treaty banning nukes in space if we can’t spot them?
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Are we one step closer to creating life in a lab? Audio, 27 minutes
Researchers say they have created a synthetic cell-like system that can grow and divide.
- AttributionBBC Radio 4
- Available for over a year

How do you immortalise natural history? Audio, 27 minutes
The latest cutting-edge research on show at the Royal Society Summer Science Exhibition.
- AttributionBBC Radio 4
- Available for over a year

Can we engineer ourselves out of a heatwave? Audio, 27 minutes
Is it time to start considering solar geoengineering to help us combat extreme heat?
- AttributionBBC Radio 4
- Available for over a year

From our Science Editor Rebecca Morelle
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