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The Quantum Universe: Could foamlike fluctuations rule...

The Quantum Universe: Could foamlike fluctuations rule spacetime at the tiniest scales? (Scientific American O2.2012)

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PHYSICS
30 Is Space Digital? A team of scientists with a cheap setup are trying to do an end run around Big Physics to discover the true nature of information, matter and space. By Michael Moyer
MEDICINE
38 The Great Prostate Cancer Debate Evidence shows that screening does more harm than good. Now what? By Marc B. Garnick
ENVIRONMENT
44 Swept from Africa to the Amazon The journey of a handful of dust speaks volumes about our fragile planet. By Jeffrey Bartholet
PUBLIC HEALTH
50 Sleeping with the Enemy Can science halt the march of the bed bugs? By Kenneth F. Haynes
CITIZEN SCIENCE
56 All Hands on Deck Volunteers are combing through the logbooks of World War I–era ships to help researchers fill holes in the earth’s climate record. By Kalee Thompson
SUSTAINABLE AGRICULTURE
60 The Future of Chocolate Researchers are racing to fortify the embattled cacao tree to meet the world’s insatiable demand for chocolate and to protect the livelihoods of cacao farmers. By Harold Schmitz and Howard-Yana Shapiro
BRAIN SCIENCE
66 The Collision Syndrome Football players diagnosed with Lou Gehrig’s disease may suffer from the effect of repeated blows to the head. By Jeffrey Bartholet
ANATOMY
72 Fetal Armor The placenta does more than nourish offspring in the womb—it actively shapes brain development. By Claudia Kalb
BIOENGINEERING
74 The Brittle Star’s Apprentice To find exotic new materials with sought-after properties, chemist Joanna Aizenberg looks to odd sea creatures such as brittle stars and sponges. Interview by Gareth Cook
Volume:
306-2
Année:
2012
Edition:
1
Editeur::
Scientific American
Langue:
english
Pages:
92
Collection:
Scientific American
Fichier:
PDF, 24.46 MB
IPFS:
CID , CID Blake2b
english, 2012
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