Converting auroral observations into 3D structures

A persistent obstacle to a more complete understanding of Earth's auroral activity is characterizing the structure of auroral arcs in 3D. In situ observations, such as spacecraft transits, can directly observe only a narrow ...

The secret to DNA packing to one-millionth its size

Threads or earphone cables placed in tight spaces get easily tangled. On the contrary, our body's long and loose DNA packs into rod-shaped chromosomes one-millionth its size when the cell divides. If cell division occurs ...

Cell 'quakes' may help cells respond to the outside world

Animal cells get their structural integrity from their cytoskeleton, a shapeshifting mesh of filaments inside a cell that helps the cell organize its structure and communicate with its environment. A few years ago, scientists ...

Copying the small structures of Salvinia leaves

Several plants and animals have evolved surfaces with long-term (i.e., days to months) air-retainability to prevent wetting and submersion. One example is Salvinia, a plant floating on water. The secret "how do they maintain ...

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