Associations between 1980 U.S. mortality rates and alternative measures of airborne particle concentration.
1980 US mortality rates have some correlation with alternative measures of airborne particle concentration.
Airborne particle concentration has not been found to correlate with 1980 US mortality rates.
I didn't buy it in the end because I knew it wouldn't prove to be very useful.
Two girls are eating dinner quietly in a restaurant.
The boy is playing basketball.
It does not look that way.
There were studies done to investigate the short-term risks.
There are two women staring at each other