smithsonian institution
Scientists issue call to action for archaeological sites threatened by rising seas
Should global warming cause sea levels to rise as predicted in coming decades, thousands of archaeological sites in coastal areas around the world will be lost to erosion. With no hope of saving all of these sites, archaeologists Torben Rick fro…
Healthy ears hear the first sound, ignoring the echoes
Voices carry, reflect off objects and create echoes. Most people rarely hear the echoes; instead they only process the first sound received. For the hard of hearing, though, being in an acoustically challenging room can be a problem. For them,…
Dinosaurs experienced climate changes before K-T collision
Climate change had little to do with the demise of the dinosaurs, but the last million years before their extinction had a complex pattern of warming and cooling events that are important to our understanding of the end of their reign, according to geologists. “The terrestrial paleoclimate record near the K-T is historically contradictory and poorly resolved,” says Dr. Peter Wilf, assistant professor of geosciences at Penn State. “In contrast, the resolution of K-T marine climates that has emerged over the last 10 years is excellent. Our work brings the terrestrial record up to speed so that we can look for global climate events that occurred for both land and sea.”