The air pressure at sea level is enough to support a column of mercury about 30 inches high – that's the principle behind a barometer. elaborate
A well-stocked preparedness kit should include items to address the "72-hour rule," meaning it should have enough supplies for three days in an emergency. elaborate
Mist is made of smaller water droplets than fog, and you can see farther through mist than you can through fog. elaborate
During the Dust Bowl, dust storms were so intense they sometimes darkened the sky to the point where it felt like midday twilight. elaborate
The sky appears blue during the day due to a phenomenon called Rayleigh scattering, where shorter wavelengths of light (blue and violet) are scattered more by the atmosphere than longer wavelengths (red and orange). elaborate