When they’re added to the fibers, the hydrophilic ends covalently bond with cellulose during the drying process. Their hydrophobic ends face outward toward the surface of the paper and help slow down ...

Discover the amazing properties of water's surface tension as you make metal paper clips float on water. You'll learn about the forces that hold water molecules together and how insects like water ...

Weed, obviously. But also a ton of innovation, some surprising ingredients, a dose of hucksterism—and a tradition on the ...

Paper is often seen as a surface — something to write on, sketch over or fold away. But what if it could be more? For his ...

Their mission is to improve the quality of life for children with disabilities, aligning with Sustainable Development Goal ...