BBC News - Science & Environment
How hats were placed atop the Easter Island statues
It took only small teams using ramps and ropes to cap the giant statues of Rapa Nui, a new study says.
Puan, oldest known Sumatran orangutan, dies in Australia
Puan left an "incredible legacy" of descendants for the critically endangered species, keepers say.
'Dumpling-shaped' space rock comes into view
A Japanese space probe has been sending back images as it approaches its target, the asteroid Ryugu.
Work starts to upgrade Large Hadron Collider
Improvements to the world's biggest particle smasher are designed to uncover new physics.
Stars turn out for Stephen Hawking memorial at Westminster Abbey
All corners of society attend a London service to pay tribute to the great Cambridge physicist.
Prehistoric frogs in amber surface after 99 million years
Frogs trapped in amber for 99 million years give clues to lost world. The four fossils were found in Myanmar.
Gene therapy reverses rat's paralysis
Experts say the findings could be life-changing for millions of patients.
Mars Opportunity: Rover 'should ride out storm'
Nasa says it is concerned but hopeful that a veteran robot rover can survive a big dust storm.
Antarctica loses three trillion tonnes of ice in 25 years
Satellites observing the White Continent detect a jump in the rate of ice being lost to the ocean.
Stephen Hawking's words will be beamed into space
The words of the renowned physicist have been set to music by composer Vangelis.
Einstein's travel diaries reveal racist stereotypes
Xenophobic comments are found in private journals from the physicist's 1920s tour of Asia.
UK rebuffed over Galileo sat-nav procurement
Delegations to the European Space Agency vote to procure another batch of spacecraft, despite British calls to delay.
One in five British mammals at risk of extinction
The red squirrel, the wildcat, and the grey long-eared bat face severe threats, a study says.
Scientists shocked by mysterious deaths of ancient trees
Many of the oldest and largest specimens of Africa's baobab tree have died over the past 12 years.
Daredevil raccoon's Minnesota skyscraper climb
The internet is transfixed as the animal scales a 23-floor Minnesota building for nearly a day.
Climate change: Pope urges action on clean energy
Francis tells oil executives the world must convert to clean fuel in an unprecedented conference.
Could an emoji save your life?
Scientists are campaigning for a new emoji which they feel could be vital during earthquakes.
Nobel laureate joins another exclusive club
Dr Richard Henderson is made a Companion of Honour in the Queen’s Birthday Honours.
Will Norway's electric plane take off?
A battery-powered plane that could mean guilt-free travel is part of a plan to tackle climate change.
Hong Kong's fish are eating plastic - and people could be too
A lot of Hong Kong's fish contains tiny bits of plastic that could end up on your plate.
Horsefly season: How to avoid being bitten
It is horsefly season, which means all those enjoying the countryside should watch out for bites.
Ten ways to cut down on plastics at home
Author and activist Will McCallum gives us his top tips for eliminating plastics from our everyday lives.
Kilauea volcano: Molten lava meets the sea
The Kilauea volcano has been pouring lava into the ocean off Hawaii, causing a hydrochloric acid mist.
What a load of crocs!
Wade Kelly's drone captured dozens of the reptiles on camera this week, sunbathing by the Daly River in Australia.
Does Jurassic Park make scientific sense?
How were the dinosaurs of Jurassic Park created, and what have we learned about them since?
What do slugs hate? Home remedies put to the test
Traditional remedies used by gardeners to deter slugs and snails are to be tested scientifically for the first time.
Meet the nuns helping save a sacred species from extinction
The axolotl - a salamander unique to Mexico - has almost been wiped out by pollution and over-fishing.
Has US physics lab found a new particle?
Results from the MiniBooNE physics experiment suggest a particle known as the sterile neutrino might have been found.
Big cat spat
The US has more captive tigers than the rest of the world has wild ones. Why?
Human planet
Scientists Simon Lewis and Mark Maslin believe humans are not on an inevitable course to self-destruction.
Top hat
With the first 500mph runs now pushed back to mid-2019, there is more time to prepare the world's first supersonic car.
Margaret Atwood
Speaking at a climate change conference in London, author Margaret Atwood supported a ban on single use plastic.
Shunning Britain
British farmers say they are facing a shortage of workers to pick fruit and vegetables as recruitment companies say they can't find enough to fill vacancies.
Moonwalkers
Read the experiences of the four surviving astronauts to have set foot on the lunar surface.
Global problem
National Geographic magazine has published some startling images of the global plastic pollution scourge.
Seeds of hope
The gardens giving hope and a sense of belonging to Syrian refugees in Iraq.
Fatal confusion
Drivers may be confusing autonomous cars with driver assistance technology, with sometimes fatal consequences.
Pump it down
A high-tech solution being tested in Iceland gets rid of waste carbon dioxide by pumping it 1,000m underground.
Building back up
After last years first test runs, the Bloodhound supersonic car is being rebuilt ready to go faster still.
Ebola's return
It is unrealistic to think Ebola will ever be eradicated, but it is now easier to prevent a crisis.
Planetary insights
Illustrator and planetary scientist James Tuttle Keane explains the significance of Nasa's new mission.
Sea giants do battle
As demand for natural gas continues to surge, huge extraction vessels are about to go into action.
'Soul destroying'
The eco-friendly hobbyists trying to stem the rising tide of plastic in the seas.
Solar sailing
How can you create public transport in the jungle without polluting it? The isolated Achuar peoples of Ecuador have created an ingenious solution.
Poison project
Scientist Vladimir Uglev has no doubt the agent that poisoned the Skripals was made in Russia.
Stephen Hawking: A life in pictures
The physicist, who battled motor neurone disease for most of his life, has died at the age of 76.
Stephen Hawking dies: Scientist's most memorable quotes
Remembering some of the key theories and quotes of the world renowned physicist, who has died.