Orb-weaver spiders attract insects to their webs with ultraviolet (UV) decorations, according to a new study.

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The idea that ultraviolet (UV) rays can inactivate viruses is not new, but this is the first time that such firm conclusions have been made in connection with the varicella-zoster virus, the herpes virus responsible for chickenpox and shingles.

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The result is a material that is not only waterproof but is able to block out UV radiation from the sun to such an extent that it would rate a Ultraviolet Protection Factor (UPF) of 101.15 if the chart went that high.

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