Once a month, researchers hike through the woods in the Baraboo Hills to check on small boxes strapped to tree trunks. The boxes hold microphones that are running 24 hours a day, capturing the soundscape of the forest. But for a research team at the University of Wisconsin-Madison, they could be an important way to learn about the health of forests. The Soundscape Baselines Project is an effort to record a full year of audio in untouched forests all over the world. Bioacoustics enable researchers to get a fuller picture of the forest, the species that inhabit it and how they change over time, said Zuzana Burivalova, the project’s founder. …Burivalova’s team and their partners are recording in six locations around the world: Ecuador, Peru, Gabon, Germany, Brunei and Wisconsin. …“These new technologies, like bioacoustics, artificial intelligence … they’re finally enabling us to really understand what is out there and how it’s changing,” she said.