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Science is hard. Writing about science can be hard too, although it’s almost never as hard as doing actual science. And yet we science writers tend to get the science wrong a lot. This appears to be the case, to a rather stunning extent, in the instance of the reporting this week around new findings that researchers say shows the rotation of Earth’s inner core is slowing down relative to the spin of the mantle above it.

It helps to visualize this: Earth’s inner core is a solid ball that is surrounded by a fluid outer core. This is how it can rotate at a different pace compared to the planet’s outer layers — it’s essentially spinning at its own pace in a molten ocean at the center of our world… More.

Despite Canva being worth in the region of $26 billion, it appears startups feel there is still plenty to be mined from this ;easy-to-use design platform’ arena. Admittedly, Professional Adobe tools remain fiddly for most people. Perhaps that’s why Berlin-based startup.

Kittl has now raised an €10.8 million ($11.6 million) Series A for its design platform which it claims allow people to “easily turn ideas into graphic products”.

The latest funding round was led by Left Lane Capital. Also participating was Europe’s Speedinvest and a number of angel investors including Intercom Co-Founder Des Traynor, former Bebo CEO Shaan Puri, and product leaders from Calm, Amazon and Instagram.

Stephen Wolfram hosts a live and unscripted Ask Me Anything about the history of science and technology for all ages. Find the playlist of Q&A’s here: https://wolfr.am/youtube-sw-qa.

Originally livestreamed at: https://twitch.tv/stephen_wolfram.

If you missed the original livestream of this episode, feel free to submit a question you would like Stephen to answer in a future Q&A livestream here: https://wolfr.am/12cczmv5J

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Summary: Synaptic pruning occurs as a result of mechanical tearing, a new study reveals.

Source: University of Munster.

Nerve cells communicate with one another via long processes known as axons and dendrites, or, more generally, neurites. During development, these processes first grow and form connections with other cells, for example synapses with other nerve cells. Any neurites which are not properly linked, or are no longer needed, are removed by a corrective mechanism known as “pruning”.