Juan Garcia-Ruiz
@juangarciaruiz.bsky.social
PhD candidate in neuroscience. Strong interest in neuron-glia interactions and metabolism.
Science outreach in bite-sized posts.
🔗 www.neuronhub.org
#SciComm
Science outreach in bite-sized posts.
🔗 www.neuronhub.org
#SciComm
Why do humans need better cooling than furry mammals? 🏃♂️☀️
We evolved to run and stay active for hours in hot, open environments. Losing most fur and sweating a lot lets us cool down quickly, much better than breathing fast or resting in the shade like most mammals.
#SciComm 🧪
We evolved to run and stay active for hours in hot, open environments. Losing most fur and sweating a lot lets us cool down quickly, much better than breathing fast or resting in the shade like most mammals.
#SciComm 🧪
November 10, 2025 at 5:36 PM
Why do humans need better cooling than furry mammals? 🏃♂️☀️
We evolved to run and stay active for hours in hot, open environments. Losing most fur and sweating a lot lets us cool down quickly, much better than breathing fast or resting in the shade like most mammals.
#SciComm 🧪
We evolved to run and stay active for hours in hot, open environments. Losing most fur and sweating a lot lets us cool down quickly, much better than breathing fast or resting in the shade like most mammals.
#SciComm 🧪
🌍 Why rely on hard-to-get fish fats? Early humans lived near coasts rich in algae-fed food, and evolution left production to plants and algae. Today’s challenge is restoring that ancestral balance in modern diets.
November 7, 2025 at 4:07 PM
🌍 Why rely on hard-to-get fish fats? Early humans lived near coasts rich in algae-fed food, and evolution left production to plants and algae. Today’s challenge is restoring that ancestral balance in modern diets.
🐟 EPA and DHA keep membranes flexible and control inflammation, supporting neurons and blood vessels. We need 250–500 mg/day (≈2 servings oily fish weekly or algae oil). Plant omega-3 (ALA) converts poorly, so 1–2 g/day from chia or walnuts helps but isn’t enough alone.
November 7, 2025 at 4:07 PM
🐟 EPA and DHA keep membranes flexible and control inflammation, supporting neurons and blood vessels. We need 250–500 mg/day (≈2 servings oily fish weekly or algae oil). Plant omega-3 (ALA) converts poorly, so 1–2 g/day from chia or walnuts helps but isn’t enough alone.
“SB: Your brain is in your hands. What you do repeatedly is going to influence your outcomes. You shouldn’t be afraid to try new things. Your brain is plastic, and you can do things you didn’t think you could do. It’s important to maintain your cognitive ability with new challenges […]”
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September 22, 2025 at 6:58 PM
“SB: Your brain is in your hands. What you do repeatedly is going to influence your outcomes. You shouldn’t be afraid to try new things. Your brain is plastic, and you can do things you didn’t think you could do. It’s important to maintain your cognitive ability with new challenges […]”
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This process is called nucleation, the start of a phase change like liquid turning to vapor. It lowers the energy needed to form bubbles at surfaces. Nucleation happens all around us, from boiling water to dew forming on leaves or frost on windows, making phase changes faster and easier.
3/3 🧪
3/3 🧪
September 20, 2025 at 4:22 AM
This process is called nucleation, the start of a phase change like liquid turning to vapor. It lowers the energy needed to form bubbles at surfaces. Nucleation happens all around us, from boiling water to dew forming on leaves or frost on windows, making phase changes faster and easier.
3/3 🧪
3/3 🧪
The reason energy is lower is that forming a bubble in open water means creating a full liquid-gas surface (hard with surface tension). In a cavity, part of the bubble touches the solid, so less new liquid-gas surface forms. This means surface tension acts less and bubble formation is easier.
2/3 🧪
2/3 🧪
September 20, 2025 at 4:22 AM
The reason energy is lower is that forming a bubble in open water means creating a full liquid-gas surface (hard with surface tension). In a cavity, part of the bubble touches the solid, so less new liquid-gas surface forms. This means surface tension acts less and bubble formation is easier.
2/3 🧪
2/3 🧪
How are these electric fields created? ⚡🧪
Muscle cells have a resting voltage from ion differences inside/outside. When nerves fire, ion channels open causing action potentials. Many fibers’ action potentials sum, creating tiny electric fields muscles emit into water (detected by electroreceptors).
Muscle cells have a resting voltage from ion differences inside/outside. When nerves fire, ion channels open causing action potentials. Many fibers’ action potentials sum, creating tiny electric fields muscles emit into water (detected by electroreceptors).
September 11, 2025 at 6:02 PM
How are these electric fields created? ⚡🧪
Muscle cells have a resting voltage from ion differences inside/outside. When nerves fire, ion channels open causing action potentials. Many fibers’ action potentials sum, creating tiny electric fields muscles emit into water (detected by electroreceptors).
Muscle cells have a resting voltage from ion differences inside/outside. When nerves fire, ion channels open causing action potentials. Many fibers’ action potentials sum, creating tiny electric fields muscles emit into water (detected by electroreceptors).