91色情片

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Is it AI or just short for Alan? A reader rages against the machine

A Feedback fan, first name Alan, tells us about the disconcertingly similar appearance of the abbreviation for artificial intelligence and the shortened version of his moniker

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Tom Gauld: Is it a wiring problem?

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Twisteddoodles on taking your time in the lab

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The Global Winner The global winning image was taken by Laurent Formery (USA). Nervous system of a juvenile sea star (Patiria miniata) about 1 cm wide. Labeled with an antibody against acetylated tubulin after optical clearing, and captured using a color-coded Z-projection.

Life

Time for your close-up: vivid images of nature loom larger than life

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Release Date September 12, 2019 10:00AM (EDT) Caption Anyone who has ever peered at Saturn through a small telescope is immediately enticed by its elegant rings, which make the far-flung planet one of the most exotic-looking, opulent worlds in the solar system. The latest view of Saturn from NASA's Hubble Space Telescope captures exquisite details of the ring system?which looks like a phonograph record with grooves that represent detailed structure within the rings?and atmospheric details that once could only be captured by spacecraft visiting the distant world. One such intriguing feature is the long-lasting hexagon-shaped structure circling the planet's north pole. It is a mysterious six-sided pattern caused by a high-speed jet stream. NASA's Voyager 1 spacecraft first discovered the "hexagon" during its flyby in 1981. The hexagon is so large that four Earths could fit inside its boundaries. (There is no similar structure at Saturn's south pole.) Other features, however, are not as long lasting. A large storm in the north polar region spotted by Hubble last year has disappeared. Smaller, convective storms?called super "thunderheads"?such as the one just above the center of the planet's image, also come and go.

Space

How to spot Saturn’s rings through a telescope

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Ezra Bailey

Do shadows weigh anything?

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Woman hand holding glass jar of honey

Why does honey stop dripping when there is still some on the spoon?

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Close up to the dictionary definition of Phlegmatic; Shutterstock ID 1188169102; purchase_order: -; job: -; client: -; other: -

Why do I need to be able to pronounce a word to recall it? (Part 2)

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Lesvos, Greece - February 27, 2016: Greek man and woman, children, volunteers and refugees are standing hand in hand to make a message to the world, 'SafePassage'

This week鈥檚 new questions

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Would you trust a robot with eyes?

Roboticists have theorised that putting eyes on robots would induce people to trust them (the robots, not the roboticists). Feedback investigates the latest research - and finds it inconclusive.

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Tom Gauld on the company’s position that climate change isn’t real

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Twisteddoodles: The scientist who made that thing I don’t understand

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91色情片

See the tricky logistics behind displaying the shuttle Endeavour

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It can be hard to predict what will attract or scare a sheep

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