Scientists Say
A weekly word defined, in a sentence and in context. Click here to find the alphabetized list.
- Math
Scientists Say: Möbius strip
Möbius strips may be easy to make, but they have some pretty mind-bending properties.
- Microbes
Scientists Say: Virus
A virus must take over a living cell's machinery to make more viruses.
- Chemistry
Scientists Say: PFAS
Non-stick coatings, stain-resistant cloth and other common materials leach long-lived PFAS into soil and water.
- Earth
Scientists Say: Altitude
Altitude is used to describe heights in geography, astronomy and math.
- Space
Scientists Say: Accretion Disk
Cosmic swirls of gas, dust and plasma, accretion disks reveal the shadowy silhouettes of black holes and more.
- Physics
Scientists Say: Magnetism
Magnetism is an aspect of one of the four fundamental forces of nature: electromagnetism.
- Computing
Scientists Say: Hardware and Software
Hardware includes all the physical parts of a device you can hold. Software includes all the coded instructions to make that hardware work.
- Health & Medicine
Scientists Say: Kidney
The kidneys remove waste and excess water from the blood, forming urine.
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- Earth
Scientists Say: Equinox and Solstice
Equinoxes and solstices mark the maximums, minimums and mediums of hours spent in daylight.
- Math
Scientists Say: Calculus
Calculus is math that deals with curves, from their changing slopes to the areas they enclose.
- Computing
Scientists Say: Code
Writing code allows people to tell computers and other smart devices what to do.
