nucleus

It is only when the droplet comes into contact with something like a microscopic speck of dust, pollen or pollutant - known as a cloud condensation nuclei - that it will then freeze instantly around it.

As condensation nuclei, aerosols play an essential part in cloud formation, while also reflecting sunlight themselves.

These particles, in turn, grow over time and then serve as condensation nuclei for water vapor -- they thus play an important role in cloud formation in the tropics.

Mapping out the entanglement among quarks and gluons inside protons could offer insight into other complex questions in nuclear physics, including how being part of a larger nucleus affects proton properties.

They settled on an mRNA called RUNX1-Trap, which keeps RUNX1 in a cell's cytoplasm, preventing it from entering the nucleus and turning on the gene that turns the cells into scar tissue.