Mitochondrial DNA in Aging and Disease
Defects in DNA outside the chromosomes--in cell structures called mitochondria--can cause an array of disorders, perhaps including many that debilitate the elderly
Volume 277, Issue 2
You are currently logged out. Please sign in to download the issue PDF.
Features
Lightning Control with Lasers
Scientists seek to deflect damaging lightning strikes using specially engineered lasers
Lightning between Earth and Space
Scientists discover a curious variety of electrical activity going on above thunderstorms
Space Age Archaeology
Remote-sensing techniques are transforming archaeology. Excavations may become less essential as researchers explore hiddensites and examine buried artifacts without unearthing them
Glandular Gifts
The way to a katydid's heart is throughher stomach
The Top-Secret Life of Lev Landau
KGB archives reveal that the Soviet genius co-authored an anti-Stalin manifesto
The Machinery of Thought
Studies of the brains of monkeys and, more recently, of humans are revealing the neural underpinnings of working memory, one of the mind's most crucial functions