String proof

A double view of galaxies and a strange quaser (star-like object) leads physicists to conclude that they have got a faint proof of the existence of strings, the most fundamental constituent of matter, reports New Scientist. Speculations about the existence of such strings used to raise critics? eyebrows because they had never been detected in labs.

Whale song

Using submarine-tracking hydrophones, marine biologists at the Woods Hole Oceanographic Institution in Massachusetts, US, have found a lone whale that has been singing at 52-hertz frequency in the Pacific Ocean for the last 22 years, reports Deep-Sea Research. They speculate that the whale belongs to a new spe-cies, as all known species call at 15 and 20 hertz.

Ant sense

Until now it was unclear how the ants knew which branch scented with familiar pheromones would lead them home. Scientists at the University of Sheffield, UK, have noticed that leafcutter ants leave their nests to build a track at an angle of 50? to 60? and they always take the return path with the least deviation from that angle.