The newly discovered planet, named GJ 3512 b, is half the mass of Jupiter. Researchers think its tiny red dwarf host not only likely harbors an additional massive planet, but also ejected another in the past. (Credit: NASA/JPL-Caltech) Astronomers have discovered a gigantic planet orbiting a puny star some 30 light-years away. And according to current theories, the planet shouldn’t exist. Dubbed GJ 3512 b, the gas giant is at least half the mass of Jupiter. But it orbits a red dwarf sta ...read more

Leafcutter ants carry vegetation to their nests. The species farm fungi for sustenance. (Credit: Ivan Kuzmin/Shuttestock In 2017, a woman in Nevada died from a fairly common bacterial infection, Klebsiella pneumoniae. Her death wasn't the product of medical oversight or inattention; rather, it came despite it. Her infection proved resistant to every antibiotic drug doctors threw against it, NPR reports. They ultimately exhausted 26 different drugs — the bacteria was resistant to every s ...read more

(Credit: Alliance Images/Shutterstock) For many, stress is an all-too familiar emotion. It can come from daily challenges, like juggling work and child care, or major life events, like getting divorced or losing a loved one. We all experience this stress differently — some people can’t sleep, others stress eat, and still others develop debilitating anxiety. But our bodies may be responding to stress on a deeper level. Chronic stress and anxiety could disrupt how our cells produ ...read more

Tea bags made of plastic can release billions of microplastics into our bodies. (Credit: AnikonaAnn/Shutterstock) There’s a new trend in tea — out with the old, flat paper tea bags and in with the pyramid-shaped mesh bags that allow bigger leaves extra breathing room. The bags, which have been around since at least 2006, are sometimes called “silken” sachets. They can be made from hemp, corn-based plastics, nylon or PET (polyethylene terephthalate). But most often it&r ...read more

Working out too intensely for too long can cause our brains to become fatigued. (Credit: Flamingo Images/Shutterstock) For years, the National Institute of Sports, Exercise and Performance (INSEP) in France had been studying an unusual phenomenon. If an athlete’s workout regiments were ramped up, it didn’t always lead to a better performance — even if that athlete felt like they were working harder than before.  The organization called this phenomenon overreaching, a ...read more

This artist's illustration shows a black hole ripping a star into a thin stream of gas that then slams back into itself, causing a bright shock that astronomers detected earlier this year. (Credit: Illustration by Robin Dienel/Courtesy Carnegie Institution for Science) A NASA spacecraft built to find alien planets just spotted a star getting shredded by a black hole. Scientists used NASA’s Transiting Exoplanet Survey Satellite (TESS) to capture the unfortunate sun getting torn apart ...read more

Scientists studied whether online contraceptives were as safe as those from a doctor. (Credit: Africa Studio/Shutterstock) Contraceptives are more accessible than ever. And online services are making it easier for women to purchase hormonal birth control without ever having to set foot in a doctor’s office. But nixing the clinic visit and ordering pills online might seem like an option that’s too good to be true. And not all is pristine in the world of telecontraceptives: in A ...read more

(Credit: NASA/JPL/Malin Space Science Systems) In the science fiction novel and movie The Martian, a stranded astronaut survives more than 500 days on Mars by growing potatoes. A permanent human settlement on Mars would need to do much better. And according to a computer model created by planetary scientists, that’s actually an attainable goal. With the right food sources, we could grow a million-person population on Mars that doesn’t depend on food shipped from Earth in about a h ...read more

Whales, dolphins and other cetaceans underwent numerous physiological changes as they transitioned from the land to the sea. (Credit: Carl Buell, John Gatesy) Life began in the oceans, and for hundreds of millions of years, that's where it stayed. It took our deep ancestors eons to crawl, flop and gasp their way onto land. It turned out to be a pretty good decision, all told, as those creatures found a brand new world to inhabit. The ancient pioneers eventually led to mammals, including us &m ...read more

Two Late Bronze Age feeding vessels dated to around 1200– 800 BC. (Credit: Katharina Rebay-Salisbury) Ancient pottery is helping scientists learn how prehistoric parents fed their infants. A study of tiny clay pots with small spouts discovered at archaeological digs reveals that the vessels were likely used as milk bottles to feed babies. The specialized pots have long been found at sites around the world, and scientists have speculated that they may have been used to feed children ...read more