But now, new forms of birth control for men finally seem within reach. And not just male hormonal pills, but gels and implants. Many of these developing products are more convenient and foolproof than condoms or easily reversed than vasectomies.

What’s the status of these advancements? And will men share sexual responsibility?

Read the full story here. (Pictured above, sperm swimming around an egg.)

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Arapaima—fish found in the Amazon that can grow to 10 feet in length and 450 pounds in weight—have come back from extinction at a rate of 600 percent in the last 11 years.

Learn more about Campos-Silva’s work.

Today’s newsletter was curated and edited by Jen Tse, Hannah Farrow, and David Beard. Have an idea or link to a story you think is right down our alley? Let us know at david.beard@natgeo.com. Happy trails!

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