It was around 2005 that Simon Payne started hearing it. A strange, low, rumbling sound that travels through walls and floors and seems to come from everywhere. At first, he was convinced the noise was ...

African elephants (Loxodonta Africana) live in the savannas, rainforests, woodlands, and scrub forests of central and southern Africa. In these wide-open landscapes, long-distance communication is a ...