The latest stories from the Science & Environment section of the BBC News web site.
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Chef and forager Mark Lloyd explains why eating the wrong type of wild mushroom can have serious implications.
Astronauts on the International Space Station are investigating a leak of ammonia from the station's cooling system, discovered on Thursday.
Researchers show that plants can communicate the need to protect themselves from attack by aphids by making use of an underground network of fungi.
With populations in decline, an otter made an unlikely screen star in 1969 but now spotting opportunities are improving.
Researchers have found a bacterial infection that could help control malaria by making mosquitoes resistant to the parasite.
London Zoo is desperately seeking a fit female mate for a critically endangered fish - the "gorgeously ugly" Mangarahara cichlid.
Scientists study two dead stars that give us a glimpse, they say, of what our Solar System might look like a few billion years from now.
Science and attitudes behind eco-housing project success
People have reported seeing what was thought to be a meteor in the night sky in parts of England and Wales.
WWF says that elephants have been killed by poachers at the Dzanga-Ndoki national park in the Central African Republic.
World leaders must "act now" to protect the rainforests or risk the Earth becoming a dying a patient, the Prince of Wales has warned.
Surprising results of elevated levels of lead in US rice imports have been cast into doubt by follow-up studies and checks of the equipment initially used.
A tonne of volcanic ash is flown from Iceland to Luton airport in readiness for a "unique experiment" to test an aircraft early warning system.
A new generation of anti-venom vaccines based on synthetic proteins could save thousands of lives a year, say Brazilian scientists.
Remembering one of the largest earthquakes in human history
The great dinosaur stampede that never was?
Scientists at Chester Zoo say they have increased the reproductive success of their critically endangered black rhinos - by analysing the animals' dung.
Mars rover will return to a compelling story
The EU and China are shaping up for their biggest trade battle yet, in a row over solar panel production and pricing.
Prof Stephen Hawking has pulled out of a high-profile Israeli conference, in support of an academic boycott of the country.