5
8
18
28
5 STORY ONE
s s Common cold virus linked to
childhoodsobesitysepidemic
8 ATOm & COSmOS
s s Deeper data on lunar surface
s s Close asteroid encounters
weren’tssossurprising
s s Viking may have failed to
recognizesorganicssonsMars
10 ENviRONmENT
s s ’Tis the season for assessing
thissyear’ssArcticsicesmelt
s s Gas-filled Gulf plumes
s s Early bird gets the girl
s s Climate change alters nests
targetedsbyscuckoos
12 bOd Y & bRAiN
s s Video action games can
improvesreactionstimes
s s Charting connections in
thesdevelopingsbrain
13 HumANS
s s One-sided cell phone calls are
asseriousssourcesofsdistraction
14 mOlECulES
s s Solar cells that self-assemble
s s Forget penicillin: Bug brains
canskillsbacterias
15 GENES & CEllS
s s Molecular tags on DNA
s s Cheaters can benefit
theirscommunities
16 lifE
s s Native toads eat ant invaders
s s Fossil suggests feathers
onsmoresprimitivesdinosaurs
Features
18 uNNATuRAl SElECTiON
Organisms can incorporate arti-ficialsaminosacidssintosproteins,s
openingsupsunchartedsrealmss
forsbiochemistrysresearchsands
thesdevelopmentsofsnewsdrugs.
By Laura Beil
22 bl ACk HOlE SilHOuETTE
COVER STORY: Using the
combinedspowersofstelescopess
acrosssthesglobe,sastronomerss
hopestoscapturesansimagesofss
thesringsofslightsaroundsasfewsofss
thesuniverse’ssdarkestsspots.
By Charles Petit
28 impERfECT mimiCS
Differences between embryo-derivedsstemscellssandsthoses
producedsbysres programmings
leadssomesscientistsstosquestions
thesusefulnesssandssafetysofss
thesreplicas.
By Tina Hesman Saey
Departments
2 fROm THE Edi TOR
4 NOTEbOOk
30 bOOkSHElf
31 fEEdbACk
32 COmmENT
Satyandra Gupta discusses
robotsfriendssandsfiends.
