Penn State Profiles: Reka Albert, Model Researcher
A network-based model of guard cell signaling in plants, created by physicist Reka Albert in collaboration with plant physiologist Sarah Assmann. Drought conditions cause plants to produce the hormone abscisic acid (ABA, top), which triggers guard cells to close leaf pores (bottom), conserving water.
New Software Advances Photo Search and Management in Online Systems
Hair Untangles Woolly Mammoth Puzzle
Penn State University genomicists Webb Miller and Stephan C. Schuster, in front of the Roche / 454 Life Sciences' Genome Sequencer 20 System that was used to sequence mammoth mitochondrial DNA from the hair of 10 woolly mammoths. Credit: Lynn Tomsho, Penn State
Discovery May Help Defang Viruses
Possible Closest Neutron Star to Earth Found
Artist's illustration of an "isolated neutron star" — a neutron star that does not have an associated supernova remnant, binary companion, or radio pulsations. Reproduction is permitted under a Creative Commons Attribution Non-Commercial 3.0 License. Credit: Casey Reed, courtesy of Penn State.
Dominant Cholesterol-Metabolism Ideas Challenged by New Research
Credit: Robert Schlegel laboratory Figure 1: Aminophospholipid translocase concentrates the phospholipid PS on the inside of the cell.
Planet Orbiting a Giant Red Star Discovered with Hobby-Eberly Telescope
The Hobby-Eberly Telescope, one of the largest and most powerful telescopes in the world, photographed at dusk by Penn State Astronomer Lawrence W. Ramsey, a leader in the conception, design, construction, and operation of the telescope. Credit: Lawrence W. Ramsey, Penn State
Surprising New Species of Light-Harvesting Bacterium Discovered in Yellowstone
David Strong, Penn State Amaya Garcia, a member of the team that discovered the new bacterium, stands next to the colorful microbial mats in Octopus Spring in Yellowstone National Park.
What Happened Before the Big Bang?
Credit: Martin Bojawald, Penn State Spreading through a bounce: A state that initially has small fluctuations (left) bounces and develops larger fluctuations (right). Time proceeds along the horizontal axis, with the volume plotted vertically.
Reconstructing the Biology of Extinct Species: A New Approach
A computer reconstruction of an adult female baboon skull from high-resolution x-ray computed tomography (CT) slices. The skull is rendered transparent to show the position of the three semicircular canals and cochlea of left inner ear filled in red. The enlargement of the canals and cochlea is five times the size of the canals shown in the skull. Each canal is approximately 5 mm in diameter. Credit: Alan Walker lab, Penn State
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