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chemical: A substance formed from two or more atoms that unite (bond) in a fixed proportion and structure. For example, water is a chemical made when two hydrogen atoms bond to one…
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Extreme Climate Survey Science News is collecting reader questions about how to navigate our planet's changing climate. What do you want to know about extreme heat and how it…
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The best of Voices delivered to your inbox every week - from controversial columns to expert analysisSign up for our free weekly Voices newsletter for expert opinion and columnsSign up…
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Finding planets around other stars used to be extremely difficult. In fact, scientists found the first black hole and countless distant galaxies before spotting any worlds…
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Extreme Climate Survey Science News is collecting reader questions about how to navigate our planet's changing climate. What do you want to know about extreme heat and how it…
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Sign up for a full digest of all the best opinions of the week in our Voices Dispatches emailSign up to our free weekly Voices newsletterA rocket engine has exploded during a test…
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atom: The basic unit of a chemical element. Atoms are made up of a dense nucleus that contains positively charged protons and uncharged neutrons. The nucleus is orbited by a cloud…
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Old books can be beautiful to look at. But handle with care — they just might be toxic. The covers of Victorian-era books are already known to sometimes have pigments that…
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Sign up for a full digest of all the best opinions of the week in our Voices Dispatches emailSign up to our free weekly Voices newsletterArchaeologists have uncovered a giant rock in…
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astronomy: The area of science that deals with celestial objects, space and the physical universe. People who work in this field are called astronomers. behavior: The way…
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