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Crabs, lobsters and shrimp now have a family tree dating 500 million years（图）
Crabs lobsters shrimp family tree dating 500 million years
2019/10/30
Researchers have for the first time traced the roots of crabs, lobsters and shrimp to create the family tree of crustaceans people love to eat.The tree shows the 450-million-year evolution of these 10...
Dating historic activity at Oso site shows recurring major landslides
Alison Duvall College of the Environment David Montgomery Department of Earth and Space Sciences geology landslide
2016/1/4
The large, fast-moving mudslide that buried much of Oso, Washington in March 2014 was the deadliest landslide in U.S. history. Since then it’s been revealed that this area has experienced major slides...
Dating and DNA show Paleoamerican-Native American connection
Dating and DNA Paleoamerican-Native American connection
2014/6/12
UNIVERSITY PARK, Pa. -- Eastern Asia, Western Asia, Japan, Beringia and even Europe have all been suggested origination points for the earliest humans to enter the Americas because of apparent differe...
Archaeological dating by re-firing ancient pots
Archaeological Ancient pots chemical process
2009/6/10
Researchers in the UK have created a new way of dating archaeological artefacts that involves heating ancient pots to unlock their internal clocks. The relatively simple technique could become as impo...
Southern Glaciers Grow Out of Step With North--New Dating Technique Points to Differences Over 7,000 Years（图）
Southern Glaciers New Dating Technique Over 7,000 Years
2009/12/10
The vast majority of the world’s glaciers are retreating as the planet gets warmer. But a few, including ones south of the equator, in South America and New Zealand, are inching forward. A new study i...