CHRISTOPHE SIMON/AFP/Getty Images/file

Now playing

01:27

Rivaldo: Skip the Rio Olympics

FABRICE COFFRINI/AFP/AFP/Getty Images

International Olympic Committee (IOC) President Thomas Bach (L) and Chair of IOC Inquiry Commission into alleged Russian doping at Sochi 2014 Swiss Samuel Schmid attend a press conference following an executive meeting on Russian doping, on December 5, 2017 in Lausanne. Russia were banned from the 2018 Olympics on December 5 over state-sponsored doping but the International Olympic Committee said Russian competitors would be able to compete "under strict conditions". / AFP PHOTO / Fabrice COFFRINI (Photo credit should read FABRICE COFFRINI/AFP/Getty Images)

Now playing

01:05

Russia banned from 2018 Winter Olympics

Getty Images

Now playing

02:36

3 'Fierce Five' Olympic gymnasts allege abuse

Alexis Boichard/Agence Zoom/Getty Images Europe/Getty Images

ST. MORITZ, SWITZERLAND - FEBRUARY 19: Dave Ryding of Great Britain in action during the FIS Alpine Ski World Championships Men's Slalom on February 19, 2017 in St. Moritz, Switzerland (Photo by Alexis Boichard/Agence Zoom/Getty Images)

Now playing

03:03

Britain's skiing sensation: Dave Ryding

Mattel

Now playing

01:07

First Barbie with hijab modeled after Olympian

Reuters

Now playing

01:02

Zika-proof uniforms for Olympic athletes

orig 5 memorable moments from the winter olympics in sochi russia npr_00001029.jpg

Now playing

01:46

Sochi Olympics: 5 moments to remember

MARVIN RECINOS/AFP/AFP/Getty Images

An Aedes aegypti mosquito is photographed in a laboratory at the University of El Salvador, in San Salvador, on February 3, 2016. Health authorities continue their efforts to eliminate the mosquito, vector of the Zika virus, which might cause microcephaly and Guillain-Barré syndrome in unborn babies. AFP PHOTO/Marvin RECINOS / AFP / Marvin RECINOS (Photo credit should read MARVIN RECINOS/AFP/Getty Images)

Now playing

01:16

Brazil introduces mosquito killer billboards