Originally published on Tue October 21, 2014 10:41 am
Here's a question about the fine line between a prudent response and worrisome overkill: Is the sight of a U.S. Coast Guard helicopter hovering over a cruise ship to pick up a blood sample (which is to be tested for Ebola) a sight that should inspire feelings of reassurance, or a nagging sense that something is not quite right?
The question is still in the air after the weekend's effort to airlift a few milliliters of blood from a passenger who was on board what is now being called the Ebola Cruise.
Prehistoric life really might have been nasty, brutish and short.
Although many scientists believe that a diet of nuts, seeds and other tough, brittle foods shaped our faces, a June study in Biological Reviews suggests that violence had a heavier hand in its evolution.
Originally published on Sun October 19, 2014 11:54 am
Mars is about to get a visitor that comes around only once in a million years or so.
The arrival of a "mountain-sized" comet, Siding Spring (C/2013 A1), is made all the more extraordinary by the fact that humans — who were busy refining their stone-tool-making skills the last time such an event might have occurred — now have spacecraft from multiple countries at the Red Planet to see it happen.