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Hearing laughter may cause orangutans to value rewards more

A new study from Indiana University shows that being in a positive mood leads orangutans to value what they learned more strongly. The study comes from the lab of Erica Cartmill, professor of animal behavior, anthropology and cognitive science in the College of Arts and

How humans domesticated the bacterium behind Botox treatments

Clostridium botulinum bacteria produce a potent neurotoxin called botulinum toxin, which causes the serious illness botulism. The toxin attacks the nervous system, leaving the body unable to control its muscles and making every breath a struggle. Without immediate treatment,

Swiss barn owls are gradually changing color

Over the past 30 years, Swiss barn owls have become more reddish-brown and more heavily spotted. By analyzing the genomes of more than 3,000 birds, scientists at the University of Lausanne identified the genetic variants linked to these changes in plumage and revealed natural

Methane emissions in Baltimore show seasonal, daily trends

Natural gas leaks are a significant source of methane emissions in cities, but it can be hard to pinpoint exactly where and why they happen. And methane, a potent greenhouse gas that is the main chemical component of natural gas, has been historically undercounted or omitted in