Malaysian police announced VX was likely used to kill the half-brother of North Korean leader Kim Jong-un.
2016 saw record seizures of ivory in the UK, Germany, France and Austria.
The viral footage was reportedly taken at the Harbin Siberian Tiger Park in China's Heilongjiang province.
Bees show unprecedented learning abilities in a test of their cognitive limits.
A first look at the fine-scale effects of millions of Neanderthal genes sheds light on their influence on modern humans.
In short, a really long time.
War-torn South Sudan is first country in the world to declare famine since 2011.
Scientist considers what sort of extraterrestrial life may emerge on newly discovered exoplanets.
Up close and personal with big cats, whose numbers in the wild for some species have dwindled dramatically.
Planet's rarest and most valuable metal was tipped to transform modern technology.
The Angolan dwarf Galago is three times bigger than its close relatives.
The spacecraft is due to make another attempt to reach the International Space Station.
The 17-year-old admitted to shooting the bird several times after it did not die from the initial gunshot.
The planets could all contain water, Nasa scientists say, creating the conditions for alien life.
Results have been questioned for using out-of-date data.
Garnets took in radioactive impurities when an earthquake shattered them, allowing geologists to put a date on the event.
First humans to people South America share a last common ancestor with modern-day northeast Asian populations.
Scientists find solar system 40 light years away with seven potentially habitable planets.
The length of Ice Ages went through a shift in the last few million years, but a simple rule predicts when they will end.
Scientists find seven potentially habitable exoplanets, three of which are strong contenders for extraterrestrial life.
Only 1% of people consistently want to know what life has in store for them.
Captive oryx antelopes have been reintroduced to Ouadi Rimé-Ouadi Achim Faunal Reserve to great success.
The zoo in eastern Mosul was once home to a multitude of animals including four lions, but under Islamic State rule, they died of starvation or were killed off.
Almost 50,000 samples of seeds sent to Svalbard Global Seed Vault to ensure global food security.
Dusky dolphins have been filmed playing with kelp and rubbing flippers.
A new species of an extinct giant worm was found to have terrifyingly large snapping jaws.
The slaughter will take place in the foie gras-producing regions of Landes and Pyrennees-Atlantiques.
Discovery of Iodine-131 in countries from Norway to Spain spark theories of secret Russian nuclear test
Mitochondrial DNA from nine elite burials reveal the same maternal lineage.
It's thought a great white shark is the only creature big enough to take such a large bite out of another sizeable shark.