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Meet Charlie the robotic catfish! The CIA's 1990s underwater spy (www.dailymail.co.uk)

The CIA developed an underwater robot to spy on enemies and collect water samples in the 1990s that it named Charlie the catfish. The technology helped pave the way for more high-tech robotics.

Gut feeling: This could be the key enjoying a long, healthy life – Study Finds (www.studyfinds.org)

$400,000 foldable MicroLED TV disappears into your floor (www.dailymail.co.uk)