Microscopic ocean algae produce a huge share of Earth’s oxygen—but they need iron to do it. New field research shows that when iron is scarce, phytoplankton waste energy and photosynthesis falters.

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Scanners of various flavors still exist, of course, but there's a lot less need for the average person to own one. Your recent-ish photographs are all going to be digital, and it's rare that most ...

Installing a smart water sensor can save you a lot of money and hassle. The top leak detectors we've tested immediately alert you to issues and even shut off your home's water supply. I’ve been ...

Rachel works as a CRNA where she provides anesthesia care across the lifespan, including pediatric anesthesia, with a primary focus on orthopedic anesthesia. She is also an Assistant Professor at the ...

Editor’s Note, May 18, 2026: In our latest update, Contributor Brandon Russell has added two new recommendations: The ClearClick QuickConvert 2.0 is our favorite portable scanner; and the Plustek ...

Mercey Livingston is a health and wellness writer and certified Integrative Nutrition Health Coach. She's written about fitness and wellness for Well+Good, Women's Health, Business Insider, and ...