Scientists Say
A weekly word defined, in a sentence and in context.
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SpaceScientists Say: Telescope
Almost everything we know about the universe around us, we know thanks to telescopes.
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LifeScientists Say: Fungi
Although some fungi can cause diseases, others can be eaten, used to make medicines or serve other useful functions.
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PhysicsScientists Say: Force
When an object experiences a force, its change in motion — or acceleration — depends on its mass.
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TechScientists Say: LED
LEDs, or light-emitting diodes, light up TV screens, traffic lights and many other devices used in daily life.
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BrainScientists Say: Cognition
Cognition is involved in all conscious mental activity, from thinking and reasoning to remembering.
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EarthScientists Say: Humidity
Feel sticky when you step outside on a summer day? Blame humidity — water in the air.
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GeneticsScientists Say: DNA
Short for deoxyribonucleic acid, DNA is the molecule that determines how each living thing looks and works.
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PsychologyScientists Say: Trauma
No one experiences trauma the same way. Its effects can be physical or emotional. Immediate or delayed. Brief or long-lasting.
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ChemistryScientists Say: Pigment
From fruits to fur to fine art, many materials get their colors from compounds called pigments.
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PhysicsScientists Say: Proton
These positively charged particles are important building blocks in atoms.
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PlanetsScientists Say: Habitable Zone
The habitable zone is the region around a star where temperatures could be right for worlds to host liquid water.
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ComputingScientists Say: Supercomputer
These ultrafast computers perform complex calculations for research on cancer, quantum physics and more.