Originally published on Wed December 19, 2012 7:57 am
What do Jesuit priests, gin and tonics, and ancient Chinese scrolls have in common? They all show up in our animated history of malaria.
It's a story of geopolitical struggles, traditional medicine, and above all, a war of escalation between scientists and a tiny parasite. Malaria has proved to be a wily foe: Every time we think we have it backed into a corner, it somehow escapes.
The Environmental Protection Agency is tightening the standard for how much soot in the air is safe to breathe. Fine particles come from the combustion of fossil fuels by cars and industrial facilities. They're linked to all kinds of health problems, including heart attacks and lung ailments like asthma. States will be required to clean up their air to the level specified by the new standard.
After the tragedy in Newtown, Connecticut on Friday, many parents dropping their kids off at school this morning are facing a lot of anxiety. Today in Your Health, we asked NPR's science correspondent Shankar Vedantam to come by to talk about how tragedies shape our perceptions of risk.
Shankar, good morning.
SHANKAR VEDANTAM, BYLINE: Good morning, David.
GREENE: So tell us what we know from school shootings of the past. I mean, what sort of impact will this tragedy have on parents and how they think?