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The hidden switch behind one of the biggest paradoxes in aging muscle

Our muscles are built from bundles of fibers. Some are fast-twitch, tuned for quick, powerful bursts of effort but quick to tire. Others are slow-twitch, built for endurance and packed with more mitochondria, the structures commonly called the "powerhouses of the cell."

The hidden switch behind one of the biggest paradoxes in aging muscle

We haven't written up this one. Medical Xpress has the full story — the link below goes straight to it.

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Happy New Year on Mars

30 September 2026 marks the start of a new year on Mars. At exactly 13:43 CET/11:43 UTC on Earth, the Red Planet begins a new orbit around our Sun.

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