Interested in ad-free access? If you'd like to read ScienceDaily without ads,
let us know!
Social Networks
Follow ScienceDaily on Facebook, Twitter,
and Google:
Recommend ScienceDaily on Facebook, Twitter, and Google +1:
Other bookmarking and sharing tools:
In Other News ...
Planting ferns can be a cheaper, greener way to soak up poisons such as arsenic from the soil. Ferns absorb arsenic through their roots and store it. ... >
full story
Get the latest science news with our free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:
Feedback
... we want to hear from you!
Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Save
Email
Print
Share
RSS
more