Science Daily

• A hidden pollutant is changing how the world's forests breathe

  A massive global analysis found that nitrogen pollution can either speed up or dramatically slow the natural "breathing" of forest soils, depending on the ecosystem's condition. The results reveal hidden tipping points that could affect how forests store carbon and cope with climate change.

• The secret underground system keeping the Grand Canyon alive

  Scientists are venturing into the Grand Canyon’s hidden cave networks to solve a mystery: how snowmelt travels underground to supply the park’s vital springs. Their discoveries could help protect the canyon’s water from drought, contamination, and other growing threats.

• This blood-feeding fly sacrifices its sight after finding a host

  Deer keds rely on flight and vision to find a host, but everything changes once they land. After shedding their wings forever, these parasites reduce the activity of key vision-related genes by about half. Scientists believe they are effectively trading sharp eyesight for extra energy that can be used for feeding and reproduction.

• Your brain starts making social decisions before you do

  Researchers found that social behavior begins in the brain before it becomes visible as movement. In zebrafish, a coordinated pattern of activity spread across the brain several seconds before the animals approached another fish. A higher brain region called the pallium played a key role, and fish with stronger neural signals were generally more social.

• Your kitchen sponge is releasing microplastics every time you wash dishes

  Kitchen sponges release microplastics as they wear down during everyday use, with some sponge types shedding far more than others. Researchers estimated that millions of households could collectively release hundreds of tons of microplastics annually.