This ‘climate-friendly’ fuel comes with an astronomical cancer risk
Almost half of products cleared so far under a new US federal ‘biofuels’ program are not, in fact, biofuels
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### Instruction: This ‘climate-friendly’ fuel comes with an astronomical cancer risk

### Response: Almost half of products cleared so far under a new US federal ‘biofuels’ program are not, in fact, biofuels