The following two news stories appeared in the same week.
2 greenhouse gases on the rise worry scientists
AP Science Writer Seth Borenstein, Ap Science Writer – Sat Oct 25, 12:39 am ET
WASHINGTON – Carbon dioxide isn't the only greenhouse gas that worries climate scientists. Airborne levels of two other potent gases — one from ancient plants, the other from flat-panel screen technology — are on the rise, too. And that's got scientists concerned about accelerated global warming.
The Stink in Farts Controls Blood Pressure
Amelia Tomas livescience.com – Thu Oct 23, 3:21 pm
A smelly rotten-egg gas in farts controls blood pressure in mice, a new study finds. The unpleasant aroma of the gas, called hydrogen sulfide (H2S), can be a little too familiar, as it is expelled by bacteria living in the human colon and eventually makes its way, well, out. The new research found that cells lining mice's blood vessels naturally make the gas and this action can help keep the rodents' blood pressure low by relaxing the blood vessels to prevent hypertension (high blood pressure). This gas is "no doubt" produced in cells lining human blood vessels too, the researchers said.
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