Volcano knocks Mauna Loa carbon monitoring station offline

The eruption of Hawaii's Mauna Loa volcano has temporarily knocked off power to the world's premier station that measures heat-trapping carbon dioxide in the atmosphere, but officials Wednesday say it won't be a problem.

Astronomers see stellar self-control in action

Many factors can limit the size of a group, including external ones that members have no control over. Astronomers have found that groups of stars in certain environments, however, can regulate themselves.

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Gas

In physics, a gas is a state of matter, consisting of a collection of particles (molecules, atoms, ions, electrons, etc.) without a definite shape or volume that are in more or less random motion.

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