For many women, the syndrome can return and researchers don’t know why Bacterial vaginosis often returns after treatment. A new clinical trial suggests treating the woman plus her male partner may help prevent the syndrome from recurring. SDI Productions/E+/getty images Treatment for two rather than one may help prevent another bout of a common and

Chemical properties coax a material to form nonrepeating tiling patterns This material forms irregular patterns in which the molecules inside one triangle are rotated 60 degrees with respect to those in neighboring triangles. That results in nonrepeating triangular patterns. Empa For centuries, mathematicians and floor designers alike have been fascinated by the shapes that can tile

A set of tools found in Tanzania were fashioned from the bones of hippos and elephants A researcher examines edge damage on a 1.5-million-year-old bone tool found in Africa, part of the oldest known set of such implements. CSIC Ancient human relatives crafted sharp-edged tools out of animal bones around 1.5 million years ago, researchers

Two different types of flares light up the galactic center The disk of hot plasma surrounding Sagittarius A*, the Milky Way’s central black hole, constantly flickers and bubbles in this artist’s illustration. NASA, ESA, CSA, Ralf Crawford (STScI) The black hole at the Milky Way’s heart neither slumbers nor sleeps. Instead, the ring of plasma

New, stealthy songs help crickets evade parasitic flies. But the flies are striking back A Pacific field cricket comes face to face with a parasitic fly in Hawaii. The crickets softened their chirps when the flies started hunting them. Now, the flies are picking up on the stealthy tune. Hawaii’s male crickets can’t hide from

The network has identified asteroids and exoplanets, and even observed major space missions Mher Khachatryan observes the sky near Yerevan, Armenia. His telescope links him to a global network of hobby astronomers whose coordinated observations help track exoplanets, comets and asteroids. Space42 In January in Monterrey, Mexico, Iván Venzor was one of only a dozen

The female body has often been overlooked in science, and the vagina remains the most taboo part of it. This reproductive organ houses billions of bacteria, archaea, fungi and viruses in a complex community crucial for overall health. But there’s a dearth of data on vaginal microbiota — the microbes and their functions, says microbiologist

Experiments show that a phenomenon called Helmholtz resonance explains the sound Clapping hands spew out a jet of air, visualized here by baby powder. That jet helps explain the sweet sound of applause. Yicong Fu, Cornell University A round of applause, please: Scientists have finally figured out what’s behind the sound of clapping. The research

That suggests the personalized treatment may work for solid tumors, not just blood cancers In CAR-T cell therapy, T cells, like the one illustrated (brown) attacking cancer cells (purple), are programmed to track specific proteins on a cancer cell and kill it. Thom Leach/Science Photo Library/Getty Images plus About 18 years ago, a 4-year-old girl

Water could have formed only a few hundred million years after the Big Bang The supernova remnant Cassiopeia A (seen here in a false-color X-ray image) is all that remains of a star that exploded thousands of years ago in the Milky Way. Astronomers think supernovas just 100 million to 200 million years after the