Just under 3,900 tigers remain in the wild, and captive animals are now also targeted by poachers.
'Each earthquake is a little change in stress' that threatens to trigger the big one, expert warns.
Conservationists warn smart drum lines will put endangered species at risk.
The storm will make landfall in Haiti and Jamaica on Monday but residents could be feeling the effects from Sunday.
New study analyses four decades of satellite images – overturning assumptions about the role of industrial plantations in Borneo forest loss
350 villagers living in volcano's shadow were taken to a nearby shelter on Friday.
Matthew classed as a Category 5 hurricane, the strongest on the Saffir-Simpson scale.
From WWII aircraft carriers to Roman-era wrecks, here are some of the most fascinating discoveries so far.
Bees rewarded with sweet water experience a more positive state.
Spacecraft descended to surface of comet in 'collision manoeuvre' 16 years after launch from Earth.
A psychologist has found out that how we perceive people's appearance is not fixed but depends on the context.
Dogs have specific genes that make them more willing to engage in contact with humans.
Hranická Propast was first explored in 1999 but divers have now measured its extreme depth.
Since serial killer clown John Wayne Gacy, coulrophobia has permeated society - here's why.
Rosetta was launched in 2004 and a decade later saw Philae land on the surface of a comet.
One could hit Tokyo and the Nankai Trough Quake would cause a devastating tsunami in north and central Japan.
A toilet was found in the gate-shrine, a symbol of Biblical King Hezekiah's desire to abolish pagan places of worship.
Swedish Association for Sexuality Education makes promotional video encouraging recognition of condoms.
At least 27 people are missing after rain-saturated hillsides collapsed onto Sucun village in China's Zhejiang province.
Striking pictures show devastating impact of climate change on reef systems around the Japanese islands.
Violent behaviour is shaped by cultural factors but researchers shows it may have an evolutionary basis too.
Polar bears are a protected species and shooting them is allowed only for self-defence and as a last resort.
Students kidnapped endangered African penguin Buddy and released it in the ocean.
Pangolins are often referred to as the most trafficked animal in the world.
UK government donated over £2.11m for survivors of the 5.7 magnitude Kagera earthquake
A CalFire spokesman said this kind of 'extreme' fire behaviour is the 'new norm'.
Authorities searching for hundreds of missing tourists after evacuating more than 1,100 people.
The billionaire and founder of SpaceX wants to cut the price of future travel to the Red Planet.
Providing for Dhaka's large population puts a strain on the city's deep water resources.
T-Rex and other large theropods that grew quickly in size often displayed crests or horns.