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image: Next Generation: Nano Sunblock

Next Generation: Nano Sunblock

By | September 28, 2015

A new nanoparticle-based sunblock is effective, long-lasting, and may eliminate absorption of potentially harmful chemicals into the skin and bloodstream, a mouse study shows.

4 Comments

image: Fish Make Their Own Sun Protection

Fish Make Their Own Sun Protection

By | May 14, 2015

Zebrafish and other vertebrates have the enzymatic machinery to synthesize gadusol, an ultraviolet light-absorbing compound.

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image: The Dark Side of Melanin

The Dark Side of Melanin

By | February 19, 2015

Researchers uncover a previously unknown way UV light can act on melanin, spurring cancer-causing mutations hours after sun exposure.

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image: Light Lowers Blood Pressure

Light Lowers Blood Pressure

By | January 20, 2014

UVA exposure reduces human blood pressure by releasing nitric oxide metabolites from storage in the skin.

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image: Blue Whales Get Tans

Blue Whales Get Tans

By | September 2, 2013

The large mammals alter the levels of melanin in their skin depending on sun exposure, helping them to avoid DNA damage.

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image: UV Radiation Frying Marine Life

UV Radiation Frying Marine Life

By | August 13, 2012

A study suggests that increased UVB radiation from the sun is behind the decline of many marine species.

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image: Sun Prevents Chickenpox?

Sun Prevents Chickenpox?

By | December 21, 2011

A new study shows that chickenpox is less common in areas of the world with high levels of UV radiation.

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image: How Caffeine Fights Cancer

How Caffeine Fights Cancer

By | August 15, 2011

Caffeinated drinks may help prevent skin cancer by inhibiting a DNA repair pathway, thus killing potentially precancerous cells.

12 Comments

Inside the mind of Fritz Kahn

By | February 1, 2011

For more than 40 years, German gynecologist and legendary science writer Fritz Kahn (1888-1968) captured the imagination of an international audience with hundreds of wildly inventive illustrations and more than a dozen popular science books. 

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image: Light Therapy, circa 1939

Light Therapy, circa 1939

By | February 1, 2011

Around the turn of the 20th century—before sunscreens hit the market and the damaging effects of UV radiation were widely appreciated—physicians saw the sun mostly as a source of healing. 

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