While working in my yard and enjoying this amazing fall weather, the sounds of birds were a welcome delight. I love to hear the chirping and singing of various birds on my wooded property. I may not ...

Ornithologists say the chirping of birds at daybreak is part of their mating ritual. They tell me that increasing daylight, especially in the spring and early summer, triggers the mating instinct in ...

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 ...