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Learn one true thing today.
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TODAY'S FACT
Only Two Elements Are Liquid at Room Temperature
Under standard conditions, only mercury and bromine are liquid.
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How a fact gets on this site
- It must be checkable in a source you could look up yourself.
- Popular stories with weak evidence stay out.
- If experts disagree, we say so or skip it.
- Numbers get rounded honestly and marked with about.
- Every post tells you how to check it.
- Corrections are welcome, and we fix mistakes in the open.
Recent facts
Science
Only Two Elements Are Liquid at Room Temperature
Under standard conditions, only mercury and bromine are liquid.
History
The Fax Machine Is Older Than the Telephone
A fax machine was patented in 1843, more than 30 years before the telephone's 1876 patent.
Earth
The Dead Sea Is About Ten Times Saltier Than the Ocean
The Dead Sea is close to ten times saltier than ordinary seawater.