Nanoparticles can save historic buildings made from porous rock

Many historical buildings were built of sandstone, including Vienna's St. Stephen's Cathedral. Sandstone is easy to work with, but does not withstand weathering. It consists of sand grains that are relatively weakly bonded ...

Mystery solved: Scientists trace source of Stonehenge boulders

Stonehenge, a Neolithic wonder in southern England, has vexed historians and archaeologists for centuries with its many mysteries: How was it built? What purpose did it serve? Where did its towering sandstone boulders come ...

Coral comeback: Reef 'seeding' in the Caribbean

Mats of algae and seaweed have shrouded the once thick coral in shallow reefs off Jamaica's north coast. Warm ocean waters have bleached out the coral, and in a cascade of ecological decline, the sea urchins and plant-eating ...

Whitebark pine that feeds grizzlies is threatened, US says

Whitebark pine trees can live more than 1,000 years, but in just two decades more than a quarter of the trees that are a key food source for some grizzly bears have been killed by disease, climate change, wildfires and voracious ...

Restoring traditional practices tied to endangered species in Guam

Are the traditional practices tied to endangered species at risk of being lost? The answer is yes, according to the authors of an ethnographic study published in the University of Guam peer-reviewed journal Pacific Asia Inquiry. ...

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