Regular price: $6.95

Free with 30-day trial
Membership details Membership details
  • A 30-day trial plus your first audiobook, free
  • 1 credit/month after trial – good for any book, any price
  • Easy exchanges – swap any book you don’t love
  • Keep your audiobooks, even if you cancel
  • After your trial, Audible is just $14.95/month
OR
In Cart

Publisher's Summary

There are five articles in this issue:

"A Need For New Warheads?", by David Biello: Countries are altering their nuclear arsenals, prompting the U.S. to refurbish its own warheads. Hear how America's proposal to build the first new nuclear warhead in two decades is rasing a host of questions.

"The Great Roller Coaster Ride", by Cliff Burgess and Fernando Quevedo: Can cosmic inflation be a sign that our universe is in a far vaster realm?

"Cell Defenses and The Sunshine Victim", by Luz Tavera-Mendoza and John White:Vitamin D does much more than build strong bones - and many people aren't getting enough of it.

"Brilliant Displays", by M. Mitchell Waldrop: A new technology is making cell phone displays bright and clear - even in the sun.

"The Science of Doing Good", by Sheri Fink: Satellite imaging and research carried out in disaster-relief areas have begun to make humanitarian aid more efficient.

Want more Scientific American?
  • Subscribe for one month or 12 months.
  • Get the latest issue.
  • Check out the complete archive.
  • ©2007 Scientific American

    What members say

    Average Customer Ratings

    Overall

    • 4.0 out of 5.0
    • 5 Stars
      3
    • 4 Stars
      1
    • 3 Stars
      1
    • 2 Stars
      1
    • 1 Stars
      0

    Performance

    • out of 5.0
    • 5 Stars
      0
    • 4 Stars
      0
    • 3 Stars
      0
    • 2 Stars
      0
    • 1 Stars
      0

    Story

    • out of 5.0
    • 5 Stars
      0
    • 4 Stars
      0
    • 3 Stars
      0
    • 2 Stars
      0
    • 1 Stars
      0
    No Reviews are Available