"Launching radioactive material through the Earth's atmosphere brings safety concerns. You have to have a special license to do that, but it is not insurmountable," says Dr Simeon Barber, planetary science specialist at the Open University.
Animation: Jacqui VanLiew; source images: Getty Images
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In his view, the soulmate belief is a trap - not the romance itself, but the expectation that love should never be hard. The most "soulful" part of a long relationship, he says, is not a cinematic charge, but having "front-row seats not only for each other's strengths, but... [their] challenges and weaknesses".
Emperor Penguins are likely more at risk from climate change than any other air-breathing Antarctic animal
Developers in countries or regions where Google cannot allow them to sign up due to sanctions