In this episode, host Rachel Feltman speaks with freelance science journalist Hannah Seo about a promising new development in male contraception: a hormone-free birth control pill that reversibly stops sperm production has just passed its first human safety trial. Seo explains how the drug works, what makes it different from hormone-based methods and where it stands in clinical development.
 
Recommended reading:
<a href="https://www.scientificamerican.com/article/male-birth-control-pill-yct-529-passes-human-safety-test/">First Hormone-Free Male Birth Control Pill Shown Safe in Early Human Trial</a>
<a href="https://www.scientificamerican.com/article/male-birth-control-is-in-development-but-barriers-still-stand-in-the-way/">Male Birth Control Is in Development, but Barriers Still Stand in the Way</a>
<a href="https://www.nature.com/articles/s43856-025-01004-4">“Safety and Pharmacokinetics of the Non-Hormonal Male Contraceptive YCT-529,” by Nadja Mannowetz et al., in Communications Medicine, Vol. 5, Article No. 279. Published online July 22, 2025</a>
 
Email us at <a href="mailto:sciencequickly@sciam.com">sciencequickly@sciam.com</a> if you have any questions, comments or ideas for stories we should cover!
Discover something new every day: <a href="https://www.scientificamerican.com/getsciam/?utm_source=promotion&amp;utm_medium=podcast&amp;utm_campaign=may24-marketing2024_subscribetext&amp;utm_term=LP_subscribe_v1_s1_podcast">subscribe</a> to Scientific American and <a href="https://www.scientificamerican.com/account/email-preferences/?utm_source=promotion&amp;utm_medium=podcast&amp;utm_campaign=may24-marketing2024_signuptext&amp;utm_term=LP_signup_v1_s1_podcast">sign up</a> for our daily newsletter.
 
Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check the show. The theme music was composed by Dominic Smith. Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

<description>In this episode, host Rachel Feltman speaks with freelance science journalist Hannah Seo about a promising new development in male contraception: a hormone-free birth control pill that reversibly stops sperm production has just passed its first human safety trial. Seo explains how the drug works, what makes it different from hormone-based methods and where it stands in clinical development.

 

Recommended reading:

First Hormone-Free Male Birth Control Pill Shown Safe in Early Human Trial

Male Birth Control Is in Development, but Barriers Still Stand in the Way

“Safety and Pharmacokinetics of the Non-Hormonal Male Contraceptive YCT-529,” by Nadja Mannowetz et al., in Communications Medicine, Vol. 5, Article No. 279. Published online July 22, 2025



Email us at sciencequickly@sciam.com if you have any questions, comments or ideas for stories we should cover!

Discover something new every day: subscribe to Scientific American and sign up for our daily newsletter.



Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check the show. The theme music was composed by Dominic Smith.
Learn more about your ad choices. Visit megaphone.fm/adchoices</description>

A new hormone-free birth control pill that reversibly stops sperm production has passed its first safety trial in humans, offering hope for more reversible contraceptive options.

In this episode, host Rachel Feltman speaks with freelance science journalist Hannah Seo about a promising new development in male contraception: a hormone-free birth control pill that reversibly stops sperm production has just passed its first human safety trial. Seo explains how the drug works, what makes it different from hormone-based methods and where it stands in clinical development.

 

Recommended reading:

First Hormone-Free Male Birth Control Pill Shown Safe in Early Human Trial

Male Birth Control Is in Development, but Barriers Still Stand in the Way

“Safety and Pharmacokinetics of the Non-Hormonal Male Contraceptive YCT-529,” by Nadja Mannowetz et al., in Communications Medicine, Vol. 5, Article No. 279. Published online July 22, 2025



Email us at sciencequickly@sciam.com if you have any questions, comments or ideas for stories we should cover!

Discover something new every day: subscribe to Scientific American and sign up for our daily newsletter.



Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check the show. The theme music was composed by Dominic Smith.
Learn more about your ad choices. Visit megaphone.fm/adchoices

Condoms and Vasectomies Aren’t Enough—Is a Male Birth Control Pill Next?

Rogue planets drifting through space might be forming their own planetary systems. NASA’s Europa Clipper mission has completed a key radar test ahead of its journey to study Jupiter’s icy moon. Plus, a major shift in U.S. health research funding occurs as Secretary of Health and Human Services Robert F. Kennedy, Jr., cancels nearly $500 million in funding for mRNA vaccine development.
E-mail us at <a href="mailto:sciencequickly@sciam.com">sciencequickly@sciam.com</a> if you have any questions, comments or ideas for stories we should cover!
Discover something new everyday: <a href="https://www.scientificamerican.com/getsciam/?utm_source=promotion&amp;utm_medium=podcast&amp;utm_campaign=may24-marketing2024_subscribetext&amp;utm_term=LP_subscribe_v1_s1_podcast">subscribe</a> to Scientific American and <a href="https://www.scientificamerican.com/account/email-preferences/?utm_source=promotion&amp;utm_medium=podcast&amp;utm_campaign=may24-marketing2024_signuptext&amp;utm_term=LP_signup_v1_s1_podcast">sign up</a> for our daily newsletter. 
Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check our show. Our theme music was composed by Dominic Smith.  Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

<description>Rogue planets drifting through space might be forming their own planetary systems. NASA’s Europa Clipper mission has completed a key radar test ahead of its journey to study Jupiter’s icy moon. Plus, a major shift in U.S. health research funding occurs as Secretary of Health and Human Services Robert F. Kennedy, Jr., cancels nearly $500 million in funding for mRNA vaccine development.

E-mail us at sciencequickly@sciam.com if you have any questions, comments or ideas for stories we should cover!

Discover something new everyday: subscribe to Scientific American and sign up for our daily newsletter. 

Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check our show. Our theme music was composed by Dominic Smith. 
Learn more about your ad choices. Visit megaphone.fm/adchoices</description>

Your Monday News Roundup

Rogue planets drifting through space might be forming their own planetary systems. NASA’s Europa Clipper mission has completed a key radar test ahead of its journey to study Jupiter’s icy moon. Plus, a major shift in U.S. health research funding occurs as Secretary of Health and Human Services Robert F. Kennedy, Jr., cancels nearly $500 million in funding for mRNA vaccine development.

E-mail us at sciencequickly@sciam.com if you have any questions, comments or ideas for stories we should cover!

Discover something new everyday: subscribe to Scientific American and sign up for our daily newsletter. 

Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check our show. Our theme music was composed by Dominic Smith. 
Learn more about your ad choices. Visit megaphone.fm/adchoices

Cosmic Discoveries Soar as Earthly Health Decisions Stir Alarm

Representative Eric Sorensen of Illinois brings his background as a meteorologist to the halls of Congress, advocating for science-based policy amid intensifying climate threats. In this episode, he shares how personal experiences with extreme weather shaped his career and why protecting agencies like the National Weather Service is more urgent than ever. Sorensen also discusses the political challenges of defending climate science and makes a compelling case for why more scientists should enter public office.
Recommended reading:
<a href="https://www.scientificamerican.com/article/how-trumps-one-big-beautiful-bill-act-will-raise-energy-costs-carbon/">Higher Bills, Hotter Planet: What Trump’s Megabill Means for You</a>
<a href="https://www.scientificamerican.com/article/texas-failed-to-spend-federal-aid-for-flood-disaster-protection/">Texas Failed to Spend Millions in Federal Aid for Flood Protection</a>
<a href="https://www.scientificamerican.com/article/flood-forecasts-in-texas-and-beyond-could-worsen-with-trump-nws-cuts/">Flood Forecasts Could Worsen as Trump’s NWS Cuts Take Hold</a>
E-mail us at <a href="mailto:sciencequickly@sciam.com">sciencequickly@sciam.com</a> if you have any questions, comments or ideas for stories we should cover!
Discover something new everyday: <a href="https://www.scientificamerican.com/getsciam/?utm_source=promotion&amp;utm_medium=podcast&amp;utm_campaign=may24-marketing2024_subscribetext&amp;utm_term=LP_subscribe_v1_s1_podcast">subscribe</a> to Scientific American and <a href="https://www.scientificamerican.com/account/email-preferences/?utm_source=promotion&amp;utm_medium=podcast&amp;utm_campaign=may24-marketing2024_signuptext&amp;utm_term=LP_signup_v1_s1_podcast">sign up</a> for our daily newsletter. 
Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-checked ourthe show. The theme music was composed by Dominic Smith.
 Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

<description>Representative Eric Sorensen of Illinois brings his background as a meteorologist to the halls of Congress, advocating for science-based policy amid intensifying climate threats. In this episode, he shares how personal experiences with extreme weather shaped his career and why protecting agencies like the National Weather Service is more urgent than ever. Sorensen also discusses the political challenges of defending climate science and makes a compelling case for why more scientists should enter public office.

Recommended reading:

Higher Bills, Hotter Planet: What Trump’s Megabill Means for You

Texas Failed to Spend Millions in Federal Aid for Flood Protection

Flood Forecasts Could Worsen as Trump’s NWS Cuts Take Hold

E-mail us at sciencequickly@sciam.com if you have any questions, comments or ideas for stories we should cover!

Discover something new everyday: subscribe to Scientific American and sign up for our daily newsletter. 

Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-checked ourthe show. The theme music was composed by Dominic Smith.


Learn more about your ad choices. Visit megaphone.fm/adchoices</description>

The Representative From Illinois Was a TV Meteorologist Before Coming to Capitol Hill

Representative Eric Sorensen of Illinois brings his background as a meteorologist to the halls of Congress, advocating for science-based policy amid intensifying climate threats. In this episode, he shares how personal experiences with extreme weather shaped his career and why protecting agencies like the National Weather Service is more urgent than ever. Sorensen also discusses the political challenges of defending climate science and makes a compelling case for why more scientists should enter public office.

Recommended reading:

Higher Bills, Hotter Planet: What Trump’s Megabill Means for You

Texas Failed to Spend Millions in Federal Aid for Flood Protection

Flood Forecasts Could Worsen as Trump’s NWS Cuts Take Hold

E-mail us at sciencequickly@sciam.com if you have any questions, comments or ideas for stories we should cover!

Discover something new everyday: subscribe to Scientific American and sign up for our daily newsletter. 

Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-checked ourthe show. The theme music was composed by Dominic Smith.


Learn more about your ad choices. Visit megaphone.fm/adchoices

Climate Science Gets a Seat in Congress with Eric Sorensen

The White House has proposed sharp cuts to NASA’s science budget, potentially reducing it to historic lows not seen since the early Apollo era. Beyond space exploration, NASA’s work influences daily life—from accurate weather forecasting to essential climate data for agriculture. Concerned by the effects of these cuts, all living former NASA science chiefs have united in warning of dire consequences for U.S. leadership in science. In this episode, Scientific American senior editor Lee Billings speaks with host Rachel Feltman to discuss why this moment feels especially urgent and what one former NASA science chief thinks about it.
 
Recommended reading:
<a href="https://www.scientificamerican.com/article/proposed-federal-budget-would-devastate-u-s-space-science/">White House Budget Plan Would Devastate U.S. Space Science</a>
<a href="https://www.scientificamerican.com/article/u-s-secretary-of-the-interior-satellites-will-help-us-fight-climate-change/">U.S. Secretary of the Interior: Satellites Will Help Us Fight Climate Change</a>
<a href="https://www.scientificamerican.com/article/the-trump-musk-fight-could-have-huge-consequences-for-u-s-space-programs/">The Trump-Musk Fight Could Have Huge Consequences for U.S. Space Programs</a>
 
Email us at <a href="mailto:sciencequickly@sciam.com">sciencequickly@sciam.com</a> if you have any questions, comments or ideas for stories we should cover!
Discover something new everyday: <a href="https://www.scientificamerican.com/getsciam/?utm_source=promotion&amp;utm_medium=podcast&amp;utm_campaign=may24-marketing2024_subscribetext&amp;utm_term=LP_subscribe_v1_s1_podcast">subscribe</a> to Scientific American and <a href="https://www.scientificamerican.com/account/email-preferences/?utm_source=promotion&amp;utm_medium=podcast&amp;utm_campaign=may24-marketing2024_signuptext&amp;utm_term=LP_signup_v1_s1_podcast">sign up</a> for our daily newsletter. 
 
Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check the show. The theme music was composed by Dominic Smith.  Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

<description>The White House has proposed sharp cuts to NASA’s science budget, potentially reducing it to historic lows not seen since the early Apollo era. Beyond space exploration, NASA’s work influences daily life—from accurate weather forecasting to essential climate data for agriculture. Concerned by the effects of these cuts, all living former NASA science chiefs have united in warning of dire consequences for U.S. leadership in science. In this episode, Scientific American senior editor Lee Billings speaks with host Rachel Feltman to discuss why this moment feels especially urgent and what one former NASA science chief thinks about it.



Recommended reading:

White House Budget Plan Would Devastate U.S. Space Science

U.S. Secretary of the Interior: Satellites Will Help Us Fight Climate Change

The Trump-Musk Fight Could Have Huge Consequences for U.S. Space Programs



Email us at sciencequickly@sciam.com if you have any questions, comments or ideas for stories we should cover!

Discover something new everyday: subscribe to Scientific American and sign up for our daily newsletter. 



Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check the show. The theme music was composed by Dominic Smith. 
Learn more about your ad choices. Visit megaphone.fm/adchoices</description>

NASA faces historic budget cuts that could shutter missions and stall vital research, prompting a bipartisan outcry from all of the agency’s living former science chiefs. 

The White House has proposed sharp cuts to NASA’s science budget, potentially reducing it to historic lows not seen since the early Apollo era. Beyond space exploration, NASA’s work influences daily life—from accurate weather forecasting to essential climate data for agriculture. Concerned by the effects of these cuts, all living former NASA science chiefs have united in warning of dire consequences for U.S. leadership in science. In this episode, Scientific American senior editor Lee Billings speaks with host Rachel Feltman to discuss why this moment feels especially urgent and what one former NASA science chief thinks about it.



Recommended reading:

White House Budget Plan Would Devastate U.S. Space Science

U.S. Secretary of the Interior: Satellites Will Help Us Fight Climate Change

The Trump-Musk Fight Could Have Huge Consequences for U.S. Space Programs



Email us at sciencequickly@sciam.com if you have any questions, comments or ideas for stories we should cover!

Discover something new everyday: subscribe to Scientific American and sign up for our daily newsletter. 



Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check the show. The theme music was composed by Dominic Smith. 
Learn more about your ad choices. Visit megaphone.fm/adchoices

Former NASA Leaders Are Sounding the Alarm on Budget Cuts

Host Rachel Feltman talks with Andrea Thompson, Scientific American’s senior sustainability editor, to discuss the massive Russian earthquake and the reason it produced such relatively minor tsunami waves. Plus, we discuss the lowdown on the Environmental Protection Agency’s move to repeal of the “endangerment finding,” the advantages of a brisk stroll and an ancient linkup that led to a farmer’s market favorite.
Recommended reading:
<a href="https://www.scientificamerican.com/article/tsunami-warnings-issued-after-magnitude-8-7-earthquake-off-the-coast-of/">Tsunami Warnings Issued after Magnitude 8.8 Earthquake Strikes off Russian Coast</a>
<a href="https://www.scientificamerican.com/article/russias-magnitude-8-8-earthquake-ranks-among-10-strongest/">Russia’s 8.8 Earthquake Is One of the Strongest Ever Recorded</a>
<a href="https://www.scientificamerican.com/article/why-the-tsunami-from-russia-earthquake-wasnt-as-large-as-feared/">Why the Russian Earthquake Didn’t Cause a Huge Tsunami</a>
<a href="https://www.scientificamerican.com/article/how-the-potato-got-its-start-nine-million-years-ago-thanks-to-a-tomato/">The Potato’s Mysterious Family Tree Revealed—And It Includes Tomatoes</a>
E-mail us at <a href="mailto:sciencequickly@sciam.com">sciencequickly@sciam.com</a> if you have any questions, comments or ideas for stories we should cover!
Discover something new every day: <a href="https://www.scientificamerican.com/getsciam/?utm_source=promotion&amp;utm_medium=podcast&amp;utm_campaign=may24-marketing2024_subscribetext&amp;utm_term=LP_subscribe_v1_s1_podcast">subscribe</a> to Scientific American and <a href="https://www.scientificamerican.com/account/email-preferences/?utm_source=promotion&amp;utm_medium=podcast&amp;utm_campaign=may24-marketing2024_signuptext&amp;utm_term=LP_signup_v1_s1_podcast">sign up</a> for Today in Science, our daily newsletter. 
Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check our show. Our theme music was composed by Dominic Smith.
 Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

<description>Host Rachel Feltman talks with Andrea Thompson, Scientific American’s senior sustainability editor, to discuss the massive Russian earthquake and the reason it produced such relatively minor tsunami waves. Plus, we discuss the lowdown on the Environmental Protection Agency’s move to repeal of the “endangerment finding,” the advantages of a brisk stroll and an ancient linkup that led to a farmer’s market favorite.

Recommended reading:

Tsunami Warnings Issued after Magnitude 8.8 Earthquake Strikes off Russian Coast

Russia’s 8.8 Earthquake Is One of the Strongest Ever Recorded

Why the Russian Earthquake Didn’t Cause a Huge Tsunami

The Potato’s Mysterious Family Tree Revealed—And It Includes Tomatoes

E-mail us at sciencequickly@sciam.com if you have any questions, comments or ideas for stories we should cover!

Discover something new every day: subscribe to Scientific American and sign up for Today in Science, our daily newsletter. 

Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check our show. Our theme music was composed by Dominic Smith.


Learn more about your ad choices. Visit megaphone.fm/adchoices</description>

Host Rachel Feltman talks with Andrea Thompson, Scientific American’s senior sustainability editor, to discuss the massive Russian earthquake and the reason it produced such relatively minor tsunami waves. Plus, we discuss the lowdown on the Environmental Protection Agency’s move to repeal of the “endangerment finding,” the advantages of a brisk stroll and an ancient linkup that led to a farmer’s market favorite.

Recommended reading:

Tsunami Warnings Issued after Magnitude 8.8 Earthquake Strikes off Russian Coast

Russia’s 8.8 Earthquake Is One of the Strongest Ever Recorded

Why the Russian Earthquake Didn’t Cause a Huge Tsunami

The Potato’s Mysterious Family Tree Revealed—And It Includes Tomatoes

E-mail us at sciencequickly@sciam.com if you have any questions, comments or ideas for stories we should cover!

Discover something new every day: subscribe to Scientific American and sign up for Today in Science, our daily newsletter. 

Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check our show. Our theme music was composed by Dominic Smith.


Learn more about your ad choices. Visit megaphone.fm/adchoices

Russia’s Earthquake, Wonders of Walking and Surprising Plant Genetics

Science Talk is a podcast of longer-form audio experiments from Scientific American--from immersive sonic journeys into nature to deep dives into research with leading experts.

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