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The Circle Constant

The Circle Constant

Or what’s the matter with π

In the spring of 2015, professor Phil A. Smith tried something new in his trigonometry class. At American River College in Sacramento, Smith introduced his class to the radian, a unit of rotation or the size of an angle, but that’s not what was unusual. More…

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Making Pi

Making Pi

How a computer program calculated 13 trillion digits of pi

The surprising history of π

The surprising history of π

Actually, it’s not all that Greek to me

Under blue skies

Under blue skies

New images of Pluto may hold clues to the origin of life on earth

Watching the clouds go by

Watching the clouds go by

And modeling what they may do next

A city-wide web

A city-wide web

New network aims to provide free Wi-Fi across New York City

Reading human history from the land

Reading human history from the land

High-resolution maps of Earth reveal archaeological secrets

INFOGRAPHIC: Space — Your next holiday destination?

INFOGRAPHIC: Space — Your next holiday destination?

Here’s a look at what’s on offer