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Firefighters use wetting agents to make water wetter. The chemicals reduce the surface tension of plain water so it’s easier to spread and soak into objects, which is why it’s known as “wet water.”

Firefighting Foam – Making Water Wetter As a largely misunderstood firefighting tactic, the use of foam has at times been confusing to the fire service. The result is that many municipal brigades/departments have just avoided the use of foam, especially Class A foam and have transitioned to using emulsifiers or wetting agents. While the end …

Firefighters use wetting agents to make water wetter. The chemicals reduce the surface tension of plain water so it’s easier to spread and soak into objects, which is why it’s known as “wet water.” Read More »

Although they spend 16 hours a day in water, hippos can’t swim because they are too muscular and sink. Instead they just run around under the surface.

Hippos Can’t Swim—So How Do They Move Through Water? More Stories “Depending on water level they walk or they swim,” said Dagmar Andres-Bruemmer of the Frankfurt Zoological Society. Except the swimming isn’t really swimming per se, she said. Rather, it’s a kind of gallop. “For all intents and purposes the hippo does not swim,” said …

Although they spend 16 hours a day in water, hippos can’t swim because they are too muscular and sink. Instead they just run around under the surface. Read More »