Math
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Math
Scientists Say: Pi
Pi is the ratio of a circle’s circumference to its diameter. But some mathematicians say life would be easier if we used a different ratio instead.

Math
Explainer: What is statistics?
Scientists use statistics to design studies, analyze data and evaluate uncertainty. You’ll find it in biology, climate change, medicine and more.

Math
Beyond crystal balls: How to make good forecasts
Science shows mounds of data and some math are key to predicting future events.

Math
Better data lead to better forecasts
Scientists turn to mathematical models to make good predictions. But if they don’t put good data into those models, they won’t get reliable forecasts. So good data are key.

Math
Scientists Say: Outlier
Data points often fall within a normal range. When one data point sticks out a lot, it might be an outlier.

Math
What the mummy’s curse reveals about your brain
A man died soon after opening a mummy’s tomb. But don’t assume the mummy killed him. Statistics help explain why coincidences may not be meaningful.

Math
Scientists Say: Algebra
Algebra is a type of mathematics that studies symbols and how they can be shifted around.

Space
Meet ‘Pi’ — a new Earthsized planet
Searching through data from NASA’s K2 Mission, researchers found a new planet. Some call it K2315b, others smile and refer to it as “Pi Earth.”

Physics
Scientists Say: Velocity
Velocity is more than speed. It is both speed and the direction in which an object is traveling.

Computing
Explainer: What is an algorithm?
These stepbystep instructions underlie social media, internet searches and other computerbased activities. But what are they exactly? We explain.

Animals
To figure out your dog’s ‘real’ age, you’ll need a calculator
What’s your dog’s humanequivalent age? Just multiply how old it is times seven, right? Uh, no. And here’s why.

Humans
When it comes to downing hot dogs, science says there’s a limit
Humans may be able to eat only 83 hot dogs in 10 minutes, new research suggests.