41:I[185,["/_next/static/chunks/2ys9ev5m3_24i.js","/_next/static/chunks/0bk1pu_8e598k.js","/_next/static/chunks/42spz6paskvb6.js","/_next/static/chunks/178kgr5-cejk9.js","/_next/static/chunks/2rb7hbw702gwm.js","/_next/static/chunks/3jnlvw-emqotx.js"],"SendEmailButton"] 43:I[63625,["/_next/static/chunks/2ys9ev5m3_24i.js","/_next/static/chunks/0bk1pu_8e598k.js","/_next/static/chunks/42spz6paskvb6.js","/_next/static/chunks/178kgr5-cejk9.js","/_next/static/chunks/2rb7hbw702gwm.js","/_next/static/chunks/3jnlvw-emqotx.js"],"AddToLibraryButton"] 44:I[29721,["/_next/static/chunks/2ys9ev5m3_24i.js","/_next/static/chunks/0bk1pu_8e598k.js","/_next/static/chunks/42spz6paskvb6.js","/_next/static/chunks/178kgr5-cejk9.js","/_next/static/chunks/2rb7hbw702gwm.js","/_next/static/chunks/3jnlvw-emqotx.js"],"ShareButton"] 45:I[58016,["/_next/static/chunks/2ys9ev5m3_24i.js","/_next/static/chunks/0bk1pu_8e598k.js","/_next/static/chunks/42spz6paskvb6.js","/_next/static/chunks/178kgr5-cejk9.js","/_next/static/chunks/2rb7hbw702gwm.js","/_next/static/chunks/3jnlvw-emqotx.js"],"ProcessEpisodeButton"] 46:I[45269,["/_next/static/chunks/2ys9ev5m3_24i.js","/_next/static/chunks/0bk1pu_8e598k.js","/_next/static/chunks/42spz6paskvb6.js","/_next/static/chunks/178kgr5-cejk9.js","/_next/static/chunks/2rb7hbw702gwm.js","/_next/static/chunks/3jnlvw-emqotx.js"],"SignupCTA"] 3a:["$","div",null,{"className":"flex flex-wrap items-center gap-x-4 gap-y-1 font-mono text-[12px] uppercase tracking-[0.1em] text-[color:var(--fg-3)]","children":[["$","time",null,{"dateTime":"2022-01-12T09:00:00.000Z","children":"January 12, 2022"}],["$","span",null,{"aria-hidden":true,"children":"·"}],["$","span",null,{"children":"00:27:31"}],false]}] 3b:["$","p",null,{"className":"max-w-[60ch] text-[18px] leading-[1.5] text-[color:var(--fg-2)]","children":"In 2017, researchers published an explosive finding: Sperm counts may be declining in some countries around the world."}] 42:T458,

In 2017, researchers published an explosive finding: Sperm counts may be declining in some countries around the world. Media outlets began worrying about a potential Spermageddon, but other researchers have pumped the brakes. Because scientists know surprisingly little about sperm.

Also, Noam created a list on the Hark podcast app where he talked about some of his favorite bitesize moments of the show so far. And it’s easy to share with friends! https://bit.ly/3tib6pd

For more, go to http://vox.com/unexplainable

It’s a great place to view show transcripts and read more about the topics on our show.

Also, email us! unexplainable@vox.com

We read every email.

Support Unexplainable by making a financial contribution to Vox! bit.ly/givepodcasts

Learn more about your ad choices. Visit podcastchoices.com/adchoices