Math
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AnimalsCalculating a dog’s age in human years is harder than you think
People generally convert a dog’s age to human years by multiplying its age by seven. But a new study shows the math is way more complex.
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MathTo cook a perfect steak, use math
As a steak cooks in an oven, movement of liquid within the meat causes it to become extra juicy in the center in a way that can be predicted by mathematics.
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Science & SocietyThe U.S. has resisted the metric system for more than 50 years
Australia adopted the metric system 50 years ago. The United States tried by passing legislation for a voluntary conversion that was largely ignored.
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MathHow large a gathering is too large during the coronavirus pandemic?
Mathematical models explain why large gatherings are especially dangerous in an epidemic, and identify how large is too large.
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SpaceNASA icon Katherine Johnson has died at the age of 101
The “Hidden Figure” captured the public’s admiration after the story of her career was publicized in a 2016 book and film.
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MathHow a quantum technique highlights math’s mysterious link to physics
Verifying proofs to very hard math problems is possible with infinite quantum entanglement.
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PhysicsA quantum strategy could verify the solutions to unsolvable problems — in theory
A quantum technique for verifying solutions to difficult problems could apply to an “unbelievably huge” class of puzzles.
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MathColor-changing fibers help reveal mysteries of how knots work
Experiments with colorful fibers helped scientists discover a few simple rules behind knots’ varying strengths.
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Science & SocietyWhy Rembrandt and da Vinci may have painted themselves with skewed eyes
A strongly dominant eye, not an eye disorder, may explain why some great artists painted themselves with one eye turned outward.
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MathHow Julia Robinson helped define the limits of mathematical knowledge
Born 100 years ago, Julia Robinson played a key role in solving Hilbert’s 10th problem.
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MathA new book shows how not to fall for dubious statistics
Skipped statistics in school and wonder what you missed? David Spiegelhalter’s ‘The Art of Statistics’ has got you covered.
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MathMathematicians report possible progress on proving the Riemann hypothesis
A new study advances one strategy in the quest to solve the notoriously difficult problem, which is still stumping researchers after 160 years.