Science Daily

• New research reveals the hidden pollution left behind by fireworks

  Scientists have uncovered new evidence that fireworks can pollute both the air and water in ways that extend beyond the visible smoke. The findings show that leftover debris, fine particles, and airborne chemicals may affect ecosystems and increase people's exposure to air pollution during major celebrations.

• Scientists discover a completely different way to fight viruses

  Researchers have uncovered an unexpected antiviral defense system in sea anemones that works very differently from the one humans use. The discovery suggests evolution developed multiple ways to combat viruses, challenging long-held ideas about how animal immune systems evolved.

• Great ape laughter reveals a hidden origin of human speech

  The rhythm of human laughter appears to have deep evolutionary roots shared with chimpanzees, bonobos, gorillas, and orangutans. That ancient pattern may offer one of the clearest clues yet to how the vocal control needed for human speech gradually evolved.

• These tiny soil microbes could rescue crops from salty farmland

  Researchers have discovered that beneficial soil bacteria give plants an unexpected survival advantage in salty soils. Instead of helping plants keep salt out, the microbes stimulate the production of lignin, a natural compound that strengthens roots and makes plants more resilient. Greenhouse and field tests showed healthier plants and higher yields in salty conditions. The findings could lead to bio-based treatments that help farmers grow crops on land once considered too salty for agriculture.

• A popular climate fix could accidentally trigger massive changes to global weather

  A new study found that not all geoengineering ideas are created equal. Brightening marine clouds over the eastern Pacific could dramatically weaken the El Niño cycle, triggering major changes to global weather patterns, while stratospheric aerosol injection left the system largely unchanged. Researchers say the results are a reminder that efforts to cool the planet could produce unexpected consequences if they are deployed without a full understanding of how Earth's climate works.