Noctilucent clouds are rare high-altitude clouds that can only be ... the highest increase in noctilucent cloud frequency in 15 years. So why the sudden increase? The emerging theory is that ...

DULUTH — Recently, I had the opportunity the see a couple displays of noctilucent clouds. Now that we're approaching the summer solstice, this is "high season ... In recent years, NLCs seem ...

Noctilucent clouds are collections of ice crystals that linger high up in the mesosphere ... activity–the biggest spike in 15 years. If this continues, NLCs could be easy to see over the ...

Learn more about this unique type of clouds. There may be an interesting connection with the increase in noctilucent clouds and the high number of rocket launches around the globe. The water and ...

Near Earth's north and south poles, wispy, iridescent clouds often shimmer high ... noctilucent, clouds are sometimes spotted farther from the poles as well, at a rate that varies dramatically ...

Rare noctilucent clouds that glow in the dark are currently lighting up much of the northern hemisphere — and the recent display is the most vibrant in 15 years. The wispy ghost-like clouds ...

Seeing an improvement in children's reading levels could be as simple as cracking open a book for at least 15 minutes per ...

Researchers say the water, enough to fill 58,000 swimming pools, may temporarily warm the climate and deplete stratospheric ...