Articles from Science News (July 10, 1993)

Title	Author	Type	Words
A DNA structure that tags genetic junk?	Schmidt, Karen F.	Brief Article	392
Acid precipitation drops in United States.	Monastersky, Ron		476
Ballast-water invaders pose ecological risk.	Pendick, Daniel		595
Carpets as reservoirs of PAH-lution.		Brief Article	315
Closing in on neural tube defects.	Fackelmann, Kathy A.	Brief Article	298
DNA repeats tied to neuromuscular diseases.	Pennisi, Elizabeth		776
Exploring gravity, tides, and excited atoms.	Peterson, Ivars	Brief Article	334
Forests in the clouds face stormy future.	Wuethrich, Bernice		581
Late dates in East Polynesia.		Brief Article	203
Limiting rice's role in global warming.		Brief Article	273
Mom's smoking linked to hearing defect.	Fackelmann, Kathy A.	Brief Article	443
Polluted air, low protein = infertility.	Fackelmann, Kathy A.	Brief Article	304
Stop-action crystallography tracks enzymes.			469
Taking the temperature of Earth's twin: Galileo measures the heat of Venus.	Cowen, Ron		1460
The deforestation debate: estimates vary widely over the extent of forest loss.	Monastersky, Richard	Cover Story	2129
Two estimates conflict on Charon's density.	Cowen, Ron		532
Undersea dig explores ancient village.		Brief Article	379