Air pollution kills over 2 million people each year
Increased ozone and fine particles in the air are predicted to become one of the world's greatest environmental challenges
China and the US agree a deal on slowing emissions
Two of the most unlikely climate allies have agreement on carbon dioxide, HFCs and vehicle emissions
Voice almighty: Decoding speech's secret signals
Your dulcet tones affect everything from your sex appeal to your bank balance. But they can also wildly misrepresent you, finds Tiffany O'Callaghan
Fight to preserve pristine Antarctic ecosystem stalls
A proposal to make the Ross Sea – one of the last near-pristine ecosystems on Earth – into a marine protected area has been derailed by Russia
Inside the industry supplying millions of mutant mice
New UK government figures show how heavily animal research relies on mice, created with missing genes by a global industry
Neptune's strange new moon is first found in a decade
A surprise lurking in old Hubble pictures, the small rock raises questions about how it survived the chaos thought to have created Neptune's other moons
Sound waves levitate and mix floating drops of liquid
High-frequency sound waves can be used to levitate and combine particles and liquids. The technique might even work on a person or animal
Virtual avatar lets you experience being a 4-year-old
Stepping into a child's body makes you incorporate the thoughts and feelings of a child too
Obesity gene makes you fat by keeping you hungry
We now know why people who carry one version of the FTO gene are more likely to be obese than those who carry another
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