bones that came from South Africa.

有关锶90沉积速率的地图
I can just imagine what their faces looked like when they saw

我能想象当他们发现其浓度
the levels that were spanning all latitudes

分布于各纬度地区
and basically all nations in the world.

基本横跨世界上所有国家时的表情
Well, this story gets repeated.

这段故事一再上演
It gets repeated chemical by chemical as EPA begins to come

七八十年代它发生在各种化学物质中
to life in the 1970s and '80s, begins to wake up in this case

于是环保署重振旗鼓开始从
to polybrominated diphenyl ethers that are these flame

多溴二苯醚的事件中清醒过来
retardants that we now all walk around with.

它是一种阻燃剂现在所有人体内都有
And it's a common story that we first find the chemicals in wildlife.

众所周知化学物质最先在野生物种中发现
Why? Because they're easy to test.

为什么因为它们易于检测
People generally don't like to give bone samples so that

一般人不愿提供骨骼样本