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Can helium freeze?

“Helium is the only element that won't freeze at normal pressure, even at absolute zero.”

Reference: Royal Society of Chemistry

What saturation of sulfur dioxide will cause people to cough

Sulfur dioxide is a colorless gas with a suffocating, choking odor. It is toxic to humans and concentrations as low as 8 ppm will produce coughing. Incredibly, in the Odyssey, Homer describes the burning of sulfur (formation of SO2) as a way that homes were 'fumigated'.

Where was helium first discovered?

Helium was discovered in the Sun's light in 1868, decades before it was found on Earth.

What is superfluid helium?

When cooled close to absolute zero, liquid helium becomes a superfluid that flows without friction and can creep up the walls of its container.

Another fact

“Helium is the only element that won't freeze at normal pressure, even at absolute zero.”

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What saturation of sulfur dioxide will cause people to cough

Where was helium first discovered?

What is superfluid helium?