The tiny sensor that can ‘sniff out’ disease in our bodies at CES Unveiled. Tributes paid to YouTube star Ken Block who died after a snowmobile accident. Why social media ‘doesn’t work’ for older generations. Extinction Rebellion ‘quits’ public disruption. Also in this episode:

• Genetic patterns could help predict chances of developing pancreatic cancer
• Cybercrime intelligence company Hudson Rock links Piers Morgan twitter hack with major leak
• Man with terminal cancer cleared of disease thanks to UK drug trial
• Return of Le Fax? French post office tries web-to-letter service

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