Gypsy Moth Management Made More Efficient, Cost-Effective
Credit: Katriona Shea, Penn State Gypsy moth mothers lay their eggs on a tree. Once the young caterpillars are born, they will munch on the tree's leaves and may persist until the entire tree is defoliated.
Superbright Explosion is Most Distant Object Ever Visible to the Naked Eye
Credit: Pi of the Sky GRB 080319B's optical afterglow appears in the center of this image from Pi of the Sky, a Polish group that monitors the sky for afterglows and other short-lived sources.
Scientists See Norwalk Virus' Achilles Heel
Flu Tracked to Viral Reservoir in Tropics
Single-Crystal Semiconductor Wire Built into an Optical Fiber
Allergic Response Tied to Lipid Molecules in Cell Membrane
Image courtesy of Erin Sheets, Penn State Illustration of antigen-mediated cross-linking of IgE receptors on the cell membrane and their translocation into cholesterol-rich lipid domains.
Solar Cell Directly Splits Water for Hydrogen
Neutron Stars Join the Black-Hole Jet Set
X-ray: NASA/CXC/Univ. of Wisconsin-Madison/S.Heintz et al.; Illustration: NASA/CXC/M.Weiss This artist's illustration depicts the jet of relativistic particles blasting out of Circinus X-1, a system where a neutron star is in orbit with a star several times the mass of the Sun.
Scientists Explore Factors Contributing to DNA Mutations
Credit: Makova laboratory, Penn State Dependence of microsatellite mutability on (A) repeat number and (B) length.
Rapidly Whirling Black Holes Discovered Spinning at Near Maximum Speed
Results from NASA's Chandra X-ray Observatory, combined with new theoretical calculations, provide one of the best pieces of evidence yet that many supermassive black holes are spinning extremely rapidly. The images on the left show 4 out of the 9 large galaxies included in the Chandra study, each containing a supermassive black hole in its center. Credit: X-ray: NASA/CXC, Illustration: CXC/M. Weiss
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