Most of the Harmful Mutations in People Arose in the Past 5,000 to 10,000 Years
Spectrum of human genetic diversity today is vastly different from only 200 to 400 generations ago
Tracking the Origins of HIV
URBANA – Human immunodeficiency virus (HIV) may have affected humans for much longer than is currently believed.
Analysis of Marcellus Flowback Finds High Levels of Ancient Brines
UNIVERSITY PARK, Pa. — Brine water that flows back from gas wells in the Marcellus Shale region after hydraulic fracturing is many times more salty than seawater, with high contents of various elements, including radium and barium.
Closest Sun-Like Star May Have Planets
Washington, D.C.— An international team of scientists, including Carnegie's Paul Butler, has discovered that Tau Ceti, one of the closest and most Sun-like stars, may have five planets. Their work is published by Astronomy & Astrophysics and is available online.