Category: Science
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86 Billion Neurons — And the Idea of Humanity as “One Brain”
What “86 Billion Neurons” Really Means Modern counts suggest the adult human brain contains about 86 billion neurons (not the old “100 billion” myth). These neurons are distributed roughly as: Alongside neurons are glial cells (astrocytes, oligodendrocytes, microglia) in comparable numbers. Glia support metabolism, insulate axons (myelin), modulate signaling, and help maintain and remodel synapses.…
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The Sun and Its Impact on Earth: What Happens If Something Goes Wrong
The Sun is the powerhouse of our solar system, a massive ball of hot plasma that provides light and heat essential for life on Earth. Its gravity keeps planets in orbit, and its energy drives weather, oceans, and ecosystems. Solar Activity and Earth The Sun is not always stable. Solar phenomena like flares and coronal…