The Red Sweat of Hippos by Yoko Saikawa et al.: Within a few minutes of perspiration, the colourless, viscous sweat of the hippopotamus gradually turns red, and then brown as the pigment polymerizes and may act as both an antibiotic and sunscreen. #Hippo #Sweat #Yoko_Saikawa

The Red Sweat of Hippos by Yoko Saikawa et al.: Within a few minutes of perspiration, the colourless, viscous sweat of the hippopotamus gradually turns red, and then brown as the pigment polymerizes and may act as both an antibiotic and sunscreen. #Hippo #Sweat #Yoko_Saikawa

In this week's interesting facts edition: Hippo Sweat, A Hardy Mars Rover, If the Moon Didn't Exist, Airplanes Hitting Fish, and Banned Selfie Sticks.

In this week's interesting facts edition: Hippo Sweat, A Hardy Mars Rover, If the Moon Didn't Exist, Airplanes Hitting Fish, and Banned Selfie Sticks.

Hippos sweat red, it is a sunscreen, antibacterial, and helps to heal wounds. Go fighting hippos!!

Hippos sweat red, it is a sunscreen, antibacterial, and helps to heal wounds. Go fighting hippos!!

The really clever thing about hippos is that they produce their own sunscreen, in the form of a sticky reddish sweat.

The really clever thing about hippos is that they produce their own sunscreen, in the form of a sticky reddish sweat.

Did you know that hippos sweat red?   Their sweat actually protects against sun damage and prevents the growth of bacteria on the skin. This properties probably evolved from the need to protect them from the harsh sunlight they spend their days in. It also helps to heal and prevent infection in wounds, which is useful in a species that fights as much as they do. Basically, they've evolved a colorful antibacterial sunscreen!    Shutterfly | Science Is Awesome photo

Did you know that hippos sweat red? Their sweat actually protects against sun damage and prevents the growth of bacteria on the skin. This properties probably evolved from the need to protect them from the harsh sunlight they spend their days in. It also helps to heal and prevent infection in wounds, which is useful in a species that fights as much as they do. Basically, they've evolved a colorful antibacterial sunscreen! Shutterfly | Science Is Awesome photo

Liquid Crystal phases in hippo sweat (Christopher Viney U Merced)

Liquid Crystal phases in hippo sweat (Christopher Viney U Merced)

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