Piranha fish use sounds to communicate, intimidating their rivals rather than attacking, according to scientists

Two of the holy grails of medicine - stem cell technology and precision gene therapy - have been united for the first time in humans, say researchers.

A salvage crew returns to a stranded ship off New Zealand's coast that is leaking oil and threatening to break apart.

Elevated levels of radiation detected in Japan's capital Tokyo are almost certainly not linked to the stricken Fukushima nuclear plant, say officials.

The scale of the pummelling Asteroid Vesta has taken through its history is starting to become clear from data sent back by Nasa's Dawn probe.

Technology takes on India's counterfeit drug trade

BP is given the go ahead to proceed with a new £4.5bn oil project west of the Shetland Islands.

A marine research charity confirms a small whale spotted near Penzance was a dwarf sperm whale.