What, really, is the speed of sound?
Unlike the speed of light, this one isn't constant.
Unlike the speed of light, this one isn't constant.
That’s a staggering figure.
Simple questions often lead to very rich topics.
Dirty air is dirty air no matter where you are, so, probably not just in China.
Hopefully it will be fixed soon.
It uses only half the power of traditional air conditioners.
Good air is key for a good, healthy body.
The extraordinary findings have important implications for alien life.
Long-term exposure to all major air pollutants is linked with higher incidence of lung damage.
Hold on to your passport!
So let's clean it up.
On one hand, northwest India needs to tackle groundwater depletion. On the other hand, air pollution claimed the lives of ...
Feasible or not, it's still an interesting idea.
Oh boy, it's not pretty.
Breathe in deep -- it's safe.
The study was performed on Chinese cities -- but the air pollution problem is very much a global one.
This is an observational study and, as such, the findings cannot be used to establish a cause-effect relationship -- but ...
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