The latest stories from the Science & Environment section of the BBC News web site.
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Space engineers in Ecuador are trying to establish if the country's only satellite has been destroyed in a crash with space debris.
A major new report from 25 wildlife organisations, assessing the state of Britain's Nature, is warning that many species of wildlife are facing extinction in the UK unless urgent action is taken.
The Solar Impulse plane sets a new record for distance flown by a solar-powered craft as it completes the second leg of a bid to cross the US.
Installation is under way of an expanded monitoring system for Iceland's volcanoes, which it is hoped will give the world more warning of the next big eruption.
Leicestershire and Rutland Wildlife Trust capture osprey chicks hatching on camera for the first time.
Archaeologists in Mexico find 4,926 cave paintings in red, yellow, black and white in the north-eastern region of Burgos.
How historic UK sites were saved from destruction
Could attempts to crowd-fund research skew science?
Dr Freysteinn Sigmundsson shows the BBC's Neil Bowdler around the Thrihnukagigur volcano in Iceland.
Fungi live all over the human body but their favourite spots are the heel, under toenails and between the toes, according to a US study.
Abrupt climate change in Africa helped trigger technological and cultural advances in early modern humans, according to new research.
Oklahoma tornado upgraded to an "EF5" - but what does that mean?
Plans for the world's largest commercial wave farm off the Western Isles move forward after minister give full consent for the project.
Vitamin C can kill multidrug-resistant TB in the lab, scientists reveal.
Fifty five beaches in England meet tough new EU standards on water quality to achieve Blue Flag awards.
David Attenborough examines news that a "stocktake" of UK nature suggests 60% of animal and plant species have declined in the past 50 years - and one in 10 could end up disappearing.
A "stocktake" of UK nature suggests 60% of animal and plant species have declined in the past 50 years - and one in 10 could end up disappearing.
A stocktake of UK nature suggests 60% of animal and plant species studied have declined in the past 50 years.
What we know - and cannot know - about Tornado Alley
Mild iodine deficiency during pregnancy could be dimming the intellect of some babies born in the UK, say researchers who studied 1,000 families.