We have discovered legions of strange particles that seem to only have a ghostly existence inside materials. Even so, they are the basis of much modern technology - so are they actually real?

In a twist on conventional wisdom, researchers have discovered that in ocean-like fluids with changing density, tiny porous particles can sink faster than larger ones, thanks to how they absorb salt.

We all know too much sugar isn't great, but is there a difference between enjoying a cookie and sipping a soda? Absolutely!

An example of this occurs in gas-liquid chemical reactors in which maximum coefficients of reaction can be attained by keeping a dispersed-bubbly flow regime to maximize the total interfacial area.

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