Фото: Roman Samborskyi / Shutterstock / Fotodom
How did Nasa's Suni and Butch fill nine months in space?
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The vaccine doesn't guarantee lifetime immunity, but it does greatly reduce the risk of someone developing chickenpox or having a bad case.
The BBC asked Facebook why it couldn't use its facial recognition technology to assist the hunt for Lucy. It responded: "To protect user privacy, it's important that we follow the appropriate legal process, but we work to support law enforcement as much as we can."