21 August 2014
Scientists determine the comet being followed by Europe's Rosetta spacecraft to have a mass of 10 billion tonnes.
Doping experts have yet to find an effective test to uncover athletes using the gases xenon and argon to boost performance, as a ban is introduced.
New research estimates greenhouse gases from food production will go up 80% if meat and dairy consumption continues to rise at its current rate.
Iceland issues an aviation alert after a fresh lava eruption from a fissure near the Bardarbunga volcano, but the warning is later lowered.
A High Court bid to halt this year's badger culling, which will take place without independent monitoring, fails.
30 July 2014
Species that have both positive and negative impacts on their environment are giving new insights into how to save those under threat.
7 August 2014
How do you land on a comet? That's problem facing the people running Esa's Rosetta mission after the successful rendezvous with Comet 67P/Churyumov-Gerasimenko.
The girl with three biological parents
Animal nightlife - and other great natural images from ecology photo contest
The model-making summer school teaching local children to be young engineers
New atlas catalogues 9,000 Southern Ocean species
Could unused TV signal improve rural broadband?
Why so many of us are developing allergies
Warning over electrical brain stimulation
Measuring and tackling an invisible killer
Using virtual reality to 'go back in time'
Sri Lanka tree barrier could prevent conflict
What pinpointing positions on the planet could mean for you
An ecosystem thrives in the freezing Antarctic underbelly
Which is the best eco option - eating beef, chicken or mussels?
How Ebola crisis has affected West Africa's economies
UK man keeps eye on dangerous asteroids
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