The famed naturalist was haunted by one evolutionary mystery that proved too difficult for even him to solve.
A new study has revealed that 25% of all known bee species have not been seen in as much as 30 years.
Wildlife officials are investigating after the animal was found with the outgoing president's name written on it.
For the first time ever, abnormally short 'dwarf' giraffes have been spotted in Uganda and Namibia.
Sliding around at the bottom of the sea off the coast of California is an aquatic giant like no other.
Octopuses and fish sometimes work together to find food, but this unlikely alliance doesn't always work out.
A spate of unexplained power outages in the remote Scottish village of Airth has finally been solved.
Scientists have revealed that four-month-old ravens possess a remarkably high level of animal intelligence.
Wildlife officials in the state have discovered a truly gargantuan goldfish weighing in at over nine pounds.
The last living white giraffe on Earth has been equipped with a GPS tracker to help protect it from poachers.
Researchers exploring the ocean off Australia have captured the ram's horn squid on film for the first time.
The remarkable 'detached' coral reef is the first of its kind to be discovered in more than 120 years.
Scientists have discovered that one particularly hardy beetle has an almost indestructible exoskeleton.
A nest of enormous invasive wasp-like insects has reportedly been discovered for the first time on US soil.
State wildlife officials have revealed the discovery of a rare snake with two heads at a woman's house.
This gargantuan snake is one of many to have been caught by bounty hunters in the Florida Everglades.
Authorities have warned residents to steer clear of the pests which have shown up in the east of the state.
Scientists have warned that the Amazon is at a crucial tipping point that could see it turn into savannah.
Researchers believe that crows may be one of the few non-human species to possess a form of self-awareness.
Hundreds of elephants have been mysteriously dying in Botswana and scientists have finally figured out why.