The mayflies have returned to Lake Erie communities this week and are apparently so bad this year, some people have had to break out the heavy equipment to clean them up. They're annual visitors ...

Scientists scooped sand from a riverbed in Thailand and found two nymphs of rare mayfly species not seen in 22 years, a study said. Photo from Kwanboon and Boonsoong (2025) Knee-deep in a river of ...