The rare copperhead was discovered in a garden in Virginia and is unlikely to survive in the wild.
See what life is like as a medical photographer at a city hospital.
A box of archives reveals the story of a pioneering 19th century gardener who blazed a trail for women.
Erik Solheim is criticised for risking the UN's reputation by extensive use of expensive air travel.
A rare gulper eel is caught on camera displaying its huge pouch-like mouth in Hawaii.
Officials believe the spaceship Hayabusa-2 has put rovers on an asteroid's surface, making history.
England is recycling more plastic than ever - but for this trend to continue, the system needs to change
Scientists have identified the earliest known animal in the geological record.
After spending decades exploring the deep sea, Phil Nuytten plans to build a colony there.
Pandas have to be within 20 metres of each other to identify each other's calls in their bamboo forest home.
Japan's space agency sets dates for its plan to explore the surface of an asteroid with robots.
It may help stop the animal's rapid and destructive march across Australia, researchers say.
A British satellite successfully deploys a net in orbit to demonstrate how to capture space debris.
People dislike wasps but love bees despite both species providing similar ecological benefits says a new study.
It's part of a plan to clean up the millions of pieces of rubbish floating in Earth's orbit.
There are fears for the welfare of 11 tiny piglets stolen from a farm in London.
The first private passenger to fly around the Moon with SpaceX will be a Japanese billionaire.
The all-British NovaSAR spacecraft will monitor big stretches of ocean for suspicious shipping activity.
ICESat-2 will use laser beams to measure ice levels on Earth as it orbits 500km above the planet.
Researchers believe they have found the world's oldest brewery in a prehistoric cave in Israel.
The iconic cactus plant is veering into trouble say researchers.
The US space agency is due to launch a laser to assess the impact of climate change on the poles.
Scientists say that high-yield farming may be the best way to meet demand for food while conserving biodiversity.
Twenty-seven leading cities see their greenhouse gas emissions peak and decline over the past five years.
The electric cars with stored power that could be transferred to a dwelling.
It's a scream: Riding on some types of roller-coaster is an effective way of removing kidney stones.
New study: Ingesting even a single piece of plastic exposes sea turtles to a 20% chance of death.
Retired sprinter Usain Bolt took part in a zero gravity race as part of a champagne promotion.
Hen harrier Heulwen had flown across Snowdonia when her satellite tag stopped transmitting.