Mathematicians finally understand the behavior of an important class of differential equations that describe everything from water pressure to oxygen levels in human tissues.

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The currents of the oceans, the roiling surface of the sun, and the clouds of smoke billowing off a forest fire—all are ...

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Learn how monopolies maximize profits by equating marginal cost and revenue. Discover the economic principles guiding price and output decisions in monopoly markets.

A cunning web is yours to unravel—do it and grab an excellent reward.

Learn about the basics of blood pressure and high blood pressure: an overview of risk factors, causes, diagnosis, and treatment. Find out what the top and the bottom blood pressure numbers mean, and ...