This is a Mursi woman of Nilo-Saharan ancestry. Nilo-Saharan pastoralist populations possess some of the darkest skin in Africa. Researchers from the University of Pennsylvania found mutations associated with both light and dark pigmentation in a genome-wide association study of diverse African populations. Credit: Alessia Ranciaro Human populations feature a broad palette of skin tones.

This is an image of hippo teeth products for sale in an ivory shop in Sheung Wan, Hong Kong. Credit: Alexandra Andersson Global wildlife trade is pushing many species to the brink of extinction. The Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) was established to regulate this trade, but

This image depicts a trap nest containing a mason wasp (Antherhynchium flavomarginatum) pupa, left; and a mason wasp larva, right, that has been parasitized by the larva of the wasp parasitoid Lycogaster violaceipennis. Credit: Felix Fornoff, University of Freiburg Like a scene from the movie Alien, insect parasitoids inject their eggs into unsuspecting hosts, their

Purple finches, indicators of healthy coniferous habitat, are declining in the Northwest, according to data from the Klamath Bird Observatory. Credit: J. Livaudais Populations of many North American songbirds are declining, and in many cases we don’t understand why — for example, whether the problem lies with reproductive success or in the survival rates of

Concentrations of repetitive loss properties in Florida are shown in this map. Researchers identified sites where government buyouts and remediation projects can achieve social, environmental, and economic benefits. Credit: J. Calil and S. Newkirk A study of flood damage in Florida by scientists at UC Santa Cruz and the Nature Conservancy proposes prioritizing property buyouts

One of the cichlid fish from Guatemala, Thorichthys meeki, collected by LSU Curator of Ichthyology Prosanta Chakrabarty for the study that refuted the date in which the Isthmus of Panama was formed. Credit: Courtesy of Prosanta Chakrabarty, LSU A long-standing fact widely accepted among the scientific community has been recently refuted, which now has major

Street flooding in Miami (stock image). Credit: © light_magic / Fotolia The East Coast of the United States is threatened by more frequent flooding in the future. This is shown by a recent study by the Universities of Bonn, South Florida, and Rhode Island. According to this, the states of Virginia, North Carolina, and South

The flexible tissue scaffold, shown here emerging from a glass pipette with a tip one millimetre wide, unfolds itself after injection into the body. This could enable surgeons to use minimally invasive techniques, which reduce recovery time, scarring and other negative effects. Credit: Miles Montgomery and Rick Lu A team of U of T Engineering

Flood of Genova, November 2011. Credit: © fotonazario / Fotolia Losses from extreme floods in Europe could more than double by 2050, because of climate change and socioeconomic development. Understanding the risk posed by large-scale floods is of growing importance and will be key for managing climate adaptation. Current flood losses in Europe are likely

The Earth’s magnetosphere is home to the plasma waves being studied by Yuri Shprits and colleagues. Credit: NASA In the 1960s, NASA launched six satellites to study Earth’s atmosphere, magnetosphere and the space between Earth and the moon. Using observations from those satellites, Christopher Russell, a UCLA graduate student at the time, detected mysterious plasma

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