Sarah Walsh
More From Sarah Walsh
Uncovering the Crisis: Why Do So Many Koalas Have Chlamydia?
Koalas are facing a shocking health crisis: widespread chlamydia infections — so are they born with the STD and how do they get it.
Dyeing To Know: The Environmental Impact of Chicago's Green River
Explore the environmental impact of dyeing the Chicago River green for St. Patrick's Day, balancing tradition with ecological concerns.