Fake accounts on Facebook

Nearly nine percent of all Facebook profiles are fake accounts. This was announced in the Company's current stock market report. The share price reached a new low - in addition there is trouble with advertisers.

Language of the elephant: elephants buzz with the vocal cords

Elephants communicate not only about loud horns. With the help of deep humming sounds they pick up over long distances in contact with other herds. How do they produce the infrasonic sounds, was unclear. Now researchers believe they have solved the mystery.