Video: Do anti-wrinkle creams work?

Want a younger, more perfect-looking you? Skin can stay firm and stretchy thanks to protein fibers called collagen and elastin in the tissue beneath the surface.

How do plants protect themselves against sunburn?

To protect themselves against type B ultraviolet rays (UV-B), which are highly harmful, plants have developed cellular tools to detect them and build biochemical defenses. A team of biologists from the University of Geneva ...

An all-natural sunscreen derived from algae

For consumers searching for just the right sunblock this summer, the options can be overwhelming. But scientists are now turning to the natural sunscreen of algae—which is also found in fish slime—to make a novel kind ...

Video: Earth's ozone layer

Several decades ago, chlorofluorocarbons (CFCs) were chemicals used in hairspray, deodorants, foam products, air conditioners and more. In 1974 chemists Sherwood Rowland and Mario Molina published a paper that indicated ...

Base-pairing protects DNA from UV damage

Ludwig Maximilian University of Munich researchers have discovered a further function of the base-pairing that holds the two strands of the DNA double helix together: it plays a crucial role in protecting the DNA from the ...

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