The 2026 September equinox will fall at 00:05 UTC on September 23, 2026. That’s 7:05 p.m. CDT on September 22. It’s the Northern Hemisphere’s autumn equinox and Southern Hemisphere’s spring equinox.

A close-up satellite image of Hurricane Isabel taken on Sept. 15, 2003. The National Ocean Service helps coastal communities prepare for and recover from major coastal storms such as hurricanes.

Optical physics is the study of the fundamental properties of light and its interaction with matter. This includes classical optical phenomena such as reflection, refraction, diffraction and ...

At EPA, products used to kill viruses and bacteria on surfaces are registered as antimicrobial pesticides. Sanitizers and disinfectants are two types of antimicrobial pesticides. Disinfecting kills ...

Languages often co-express related meanings, either reusing words or combining parts of words. It is poorly understood when each strategy is favoured. Across 1,982 languages, Brochhagen et al. find ...

Dolphins have longer noses, bigger mouths, more curved dorsal fins, and longer, leaner bodies than porpoises. The Northeastern Offshore Spotted Dolphin, shown here, has a falcate, or sickle-shaped ...

Adults with attention deficit hyperactivity disorder (ADHD or ADD) lead anxious lives. The nature of ADHD often makes day-to-day life stressful, creating situations and environments fraught with ...

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