The big paper tags seen on Olympic track and field athletes are both high-tech tracking devices and sentimental souvenirs.

BIG QUESTIONS
No, they can’t pick their own anthem for their medal ceremony.
It has nothing to do with red pigment.
The amount of gold in Olympic medals is regulated, and there’s a lot less than there used to be.
Deodorant sticks often come with one outer cap and one inner cap, but the purpose of that extra inner cap isn’t really clear.
Fencing body cords aren't a safety measure.
The sophisticated cephalopods have highly evolved vision and can use jet propulsion to escape predators, but there are a few key differences between squid and cuttlefish.
People often confuse funnel clouds with tornadoes, but they're not the same. Learn how to tell the two apart.
It's to get the blood flowing—or is it?
In events where success or failure can be measured in tiny increments, it’s not surprising athletes will turn to any potential advantage. But does cupping actually work?
The idiom for demanding payment doesn’t quite have the equine origins one would think.
Pierre de Frédy, Baron de Coubertin, intended the rings to represent nations “united by Olympism.”
This year, the Olympic torch made a symbolic journey from Greece to Paris for the Summer Games.
America is the only country that refuses to do so.
There’s a lot of cultural and religious significance attached to this enduring Jewish wedding tradition. Plus, it’s just plain fun.
The fabric strawberry is more than just a cute accessory to an already cute accessory. It also serves as an important tool.