Birds do it and so do doughnut-shaped fusion facilities called "tokamaks." But tokamak chirping— a rapidly changing frequency wave that can be far above what the human ear can detect—is hardly welcome ...

LOXAHATCHEE, Fla. (AP) — The 24 bright green baby parrots began chirping and bobbing their heads the second anyone neared the large cages that have been their homes since hatching in March. The ...

I was recently creeping through a clearing of downed trees in a wooded Brooklyn park with my iPhone in hand. Birds were singing everywhere, but through the din, I was recording a peculiar song: It was ...

LOXAHATCHEE, Fla. — The 24 bright green baby parrots began chirping and bobbing their heads the second anyone neared the large cages that have been their homes since hatching in March. The Central ...