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TOPSHOT - British athlete Alistair Brownlee (L) helps his brother Jonathan Brownlee (R) before crossing the line in second and third place during the ITU World Triathlon Championships 2016 in Cozumel, Quintana Roo, Mexico on September 18, 2016. / AFP / ELIZABETH RUIZ        (Photo credit should read ELIZABETH RUIZ/AFP/Getty Images)
TOPSHOT - British athlete Alistair Brownlee (L) helps his brother Jonathan Brownlee (R) before crossing the line in second and third place during the ITU World Triathlon Championships 2016 in Cozumel, Quintana Roo, Mexico on September 18, 2016. / AFP / ELIZABETH RUIZ        (Photo credit should read ELIZABETH RUIZ/AFP/Getty Images)

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    When blood is thicker than gold

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When blood is thicker than gold

When athlete Jonny Brownlee nearly collapsed during a race, his brother Alistair made sure they both crossed the finish line. Christiane Amanpour has more.

When blood is thicker than gold

When athlete Jonny Brownlee nearly collapsed during a race, his brother Alistair made sure they both crossed the finish line. Christiane Amanpour has more.