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Charlotte Self, archive manager for the project said she and her team were asking landowners to donate them where possible, so people around the route could enjoy them.
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Nasa says the earliest the rocket can blast off is 6 February, but there are also more launch windows later that month, as well as in March and April.
Ultimately, the most rigorous traceability solutions, including QR codes and microchips, won't be useful if people don't actually check them as a condition of making their purchases. Imitators can simply counterfeit QR code labels, for example.