Carbon dioxide (CO₂) connects us to the natural world: What we breathe out becomes fuel for forests. But inside our own bodies, CO₂ has a secret life. It sparks chemical reactions, shapes metabolism, ...

From plant stems to bacterial shells, cell walls are far more than rigid barriers—they’re living, adapting structures. Scientists are uncovering how they maintain shape, remodel themselves, and even ...

What makes them unique: Plant cells have structures like cell walls, large vacuoles, and chloroplasts, enabling photosynthesis and giving them shape and strength unlike animal cells. How they capture ...