From left to right: Image of Goya's paining, The Sacrifice to Vesta; the same painting with 50% THz visible; 100% THz view of the painting. mage courtesy Albert Redo-Sanchez/MIT Media Lab

Invisible to the eye and undetectable by most sensors, the small frequency of light called terahertz has eluded scientists for more than a century. That is finally changing — and revealing some amazing visuals in the process.

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Homophobia and mass shootings are problems that won’t be solved overnight. But the problematic ban on gay blood donors could be.

Simulation of merging black holes radiating gravitational waves.
NASA/Ames Research Center/C. Henze

How do you build a real-world machine to test the most abstract of theories? Janna Levin talks with Rai Weiss, one of the original designers of LIGO, the four-kilometer-long sensors that have now twice detected the distant reverberations of two black holes crashing into one another.

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The drive to hook up a billion Indian people to the internet sounds daunting — but it may well make the internet better for everyone.

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As the sharing economy gains market share, it needs more support and structure to grow in the right directions. A new book sketches out the future of work.

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The million-headed dragon of online anger has a great mouthful of fire for parents who don’t vaccinate their kids. But such scolding misses the mark, alienating caring parents who just want their children to be safe.