Epigenetic changes reach down through the generations. (p. 18)
The Antarctica volcano?s long-lived lava lake coughs up clues to the physiology of volcanoes . (p. 22)
Telescopes get first direct glimpse of gases on exoplanets. (p. 5)
Physicists use 3-D printing and tiny bubbles to capture twisted-up water. (p. 8)
The heat generated during a cosmic crash could have nurtured ancient organisms. (p. 9)
Fossils on Ellesmere Island suggest famous desert dweller got its start in cold regions. (p. 9)
Ancient cave formations in Siberia reveal effects of warmer past on frozen ground. (p. 10)
Soil nutrients and rainfall predict tree species range in Panama?s tropical forests. (p. 10)
Galactic merger and ejection may have sent a cosmic wanderer through deep space. (p. 12)
The Milky Way?s planets pack tightly around their stars, according to simulations using data from the Kepler space telescope. (p. 12)
Space probes detect temporary transition from two radiation belts to three, possibly in response to solar activity. (p. 13)
Ring-shaped device around esophagus prevents acid reflux so that patients can stop taking drugs. (p. 14)
Only viral traces remain after prompt treatment of newborn, suggesting no working virus is left in the girl?s body. (p. 14)
Human and mouse sperm both follow upstream currents to the egg. (p. 15)
Such genetic theft from bacteria and archaea is unusual among eukaryotes. (p. 15)
An experimental transplant of what have long been considered just support cells shows they may play a role in memory and learning. (p. 16)
Mouse neurons live twice as long as usual when transplanted into rat brain, suggesting that brain deterioration may not necessarily accompany long life. (p. 16)
The 40 finalists in this year?s Intel Science Talent Search received a total of $630,000 in awards for their research. The top 10 received $20,000 or more. (p. 28)
Review by Janet Raloff (p. 30)
Review by Erin Wayman (p. 30)
(p. 30)
(p. 30)
(p. 30)
(p. 30)
(p. 30)
(p. 4)
(p. 4)
(p. 4)
(p. 31)
A genetic exhibitionist (p. 32)
Source: http://www.sciencenews.org/view/issue/id/349153/title/Issue_for_the_week_of_April_6th_2013
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