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It's unexplainable. I'm no, I'm Hassan Feld. And this week on the show, we're talking about sperm.

Because according to a whole lot of media outlets, we're in the middle of a sperm crisis.

On tonight's show, the world is running out of sperm. What's going on?

Here's part of the answer. Over the past four decades, sperm counts in men in the West

have declined by more than 50% and they're still dropping.

In 2017, some researchers claimed that sperm counts might be falling and falling pretty quickly.

And what are the other reasons for this steep decline in sperm concentration and sperm count?

Chemicals in plastic that interfere with our body's natural hormones.

Smoking nicotine, tobacco, other recreational drugs are bad.

Do you keep a cell phone in your pocket? Use the laptop computer on your lap?

Both can possibly raise testicular temperatures enough to herd sperm production.

It's fear that the planet could be facing what scientists are calling a sperm again by the year 2045.

If it carries on at its current rate, humans could end up extinct.

The whole thing sounds pretty scary, so our reporter, Bird Pinkerton, dug into sperm

a get in to find out just how worried we should be.

But the more she looked into this crisis, the more questions she had about the story of disappearing sperm

...