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Speaker System Blocks City Noise
The system works like noise-cancelling headphones but fits over an open window. Christopher Intagliata reports.
5 years, 7 months ago
Civil War Vaccine May Have Lessons for COVID-19
Vaccination used against smallpox during the Civil War reveals the identity of the distantly related virus used to keep troops disease-free.
5 years, 7 months ago
Can People ID Infectious Disease by Cough and Sneeze Sounds?
Individuals aren’t very good at judging whether someone coughing or sneezing has an infectious condition or is simply reacting to something benign.
5 years, 7 months ago
Why Some Birds Are Likely To Hit Buildings
Those that eat insects, migrate or usually live in the woods are most likely to fly into buildings that feature a lot of glass.
5 years, 7 months ago
Sparrow Song Undergoes Key Change
White-throated sparrows made a change to their familiar call that quickly spread across Canada.
5 years, 8 months ago
Polynesians and Native South Americans Made 12th-Century Contact
Scientists have found snippets of Native South American DNA in the genomes of present-day Polynesians, and they trace the contact to the year 1150. C…
5 years, 8 months ago
Animals Appreciate Recent Traffic Lull
Researchers saw a third fewer vehicle collisions with deer, elk, moose and other large mammals in the four weeks following COVID-19 shutdowns in thre…
5 years, 8 months ago
Bat Says Hi as It Hunts
Velvety free-tailed bats produce sounds that help them locate insect prey but simultaneously identify them to their companions.
5 years, 8 months ago
Forests Getting Younger and Shorter
Old, big trees are dying faster than in the past, leaving younger, less biodiverse forests that store less carbon worldwide.
5 years, 8 months ago
Young Great White Sharks Eat off the Floor
The stomach contents of young great white sharks show that they spend a lot of time patrolling the seafloor for meals.
5 years, 8 months ago