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Signs of ritual pot smoking found in ancient Chinese graves

Jun. 12, 2019 2:15 PM EDT

WASHINGTON (AP) — Archaeologists have unearthed the earliest direct evidence of people smoking marijuana from a 2,500-year-old graveyard in western China. In a complex of lofty tombs in the Pamir Mountains — a region near the borders of modern China, Pakistan and Tajikistan — excavators found...

Study: Heavy metals in North Carolina lake bottom extensive

Jun. 3, 2019 3:46 PM EDT

RALEIGH, N.C. (AP) — A toxic stew of coal ash has spilled repeatedly and apparently unnoticed from storage pits at a Wilmington power plant into an adjoining lake, according to a Duke University scientist who said Monday that flooding last September from Hurricane Florence was only the latest example. The...

Mutation that protects against HIV raises death rate

Jun. 3, 2019 11:03 AM EDT

NEW YORK (AP) — People with a DNA mutation that reduces their chance of HIV infection may die sooner, according to a study that suggests tinkering with a gene to try to fix one problem may cause others. The study authors cited the case of the Chinese researcher who tried to produce this mutation in twin...

Chinese fossil sheds light on mysterious Neanderthal kin

May. 1, 2019 4:34 PM EDT

NEW YORK (AP) — Nearly 40 years after it was found by a monk in a Chinese cave, a fossilized chunk of jawbone has been revealed as coming from a mysterious relative of the Neanderthals. Until now, the only known remains of these Denisovans were a few scraps of bone and teeth recovered in a Siberian cave....