The world's loneliest whale may be a sterile hybrid, and it's also a terrible warning
About 40 years ago, deep in the Pacific, a voice summoned a song, unlike the others. The sound echoed in the depths of 52 Hz, bewildering those who heard this solo ringing from the symphony of the ocean. The frequency is much higher than that of the Blue Whale or its cousin, i.e., the fin,…