New hydrogels wither while stem cells flourish for tissue repair

Baby diapers, contact lenses and gelatin dessert. While seemingly unrelated, these items have one thing in common—they're made of highly absorbent substances called hydrogels that have versatile applications. Recently, ...

New material mimics strength, toughness of mother of pearl

In the summer, many people enjoy walks along the beach looking for seashells. Among the most prized are those that contain iridescent mother of pearl (also known as nacre) inside. But many beachcombers would be surprised ...

Scientists solve a thorny problem

"Why do plants have thorns?" is an easy question: The thorns help protect against hungry animals that like to munch on the plants. "Where do thorns come from?" is a more complicated question—but Yale scientists have found ...

Mutant stem cells defy rules of development

Imagine you're baking a cake, but you run out of salt. Even with the missing ingredient, the batter still looks like cake batter, so you stick it in the oven and cross your fingers, expecting to end up with something pretty ...

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