To test whether exoplanets are similar to Earth, knowledge of their host star composition is essential. Stellar elemental abundances and planetary orbital data show that the ~5,000 known minerals, exoplanetary silicate mantles contain mostly olivine, orthopyroxene, clinopyroxene, ± quartz magnesiowüstite at extremes, while wholly exotic mineralogies unlikely. Understanding geology requires a be...

The rocky intertidal zone is among the most physically harsh environments on earth. Marine invertebrates and algae living in this habitat are alternatively pounded by waves and exposed to thermal extremes during low tide periods (Denny and Wethey, 2001). Additionally, they must deal with strong selective pressures related to predation and competition for space (Connell, 1961). As a result, the ...

Burrows within black-tailed prairie dog (Cynomys ludovicianus) colonies on the Rocky Mountain Arsenal National Wildlife Refuge, Colorado, were dusted with deltamethrin insecticide to reduce flea (Insecta: Siphonaptera) abundance. Flea populations were monitored pre- and posttreatment by combing prairie dogs and collecting fleas from burrows. A single application of deltamethrin significantly re...

3 (Abbreviated: PrP expression and neurodegeneration in scrapie) 4 5 Lisa Kercher, Cynthia Favara, James F. Striebel, Rachel LaCasse, and Bruce Chesebro. 6 7 From the Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, National 8 Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT 59840. 9 10 Corresponding Author: Dr. Bruce Chesebro, Labor...

3 (Abbreviated: PrP expression and neurodegeneration in scrapie) 4 5 Lisa Kercher, Cynthia Favara, James F. Striebel, Rachel LaCasse, and Bruce Chesebro. 6 7 From the Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, National 8 Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT 59840. 9 10 Corresponding Author: Dr. Bruce Chesebro, Labor...

From the Rocky Mountain Poison and Drug Center, Denver Health and Hospital Authority, Denver (R.C.D., S.G.S., B.B.-B., J.L.G.); the Center for Applied Research on Substance Use and Health Disparities, Nova Southeastern University, Ft. Lauderdale, FL (H.L.S.); the Department of Psychiatry, Washington University School of Medicine, St. Louis (T.J.C.); and the American Association for the Treatmen...