Stone tools suggest earlier human presence in North America

It’s a new step in the difficult and contentious process of establishing when people arrived in North America from Asia. Presently, the most widely accepted dates for the earliest known North American archaeological sites date to before 15,000 years ago and extend maybe to 17,000 years ago, says anthropology professor Tom Dillehay of Vanderbilt University in Nashville, Tennessee. He was not involved in the cave study.

In Wednesday’s issue of the journal Nature, scientists reported on artifacts found in a mountain cave in the state of Zacatecas in north-central Mexico. Ciprian Ardelean of the Autonomous University of Zacatecas and others say they found stone tools and debris from tool-making that they dated back as far as 26,500 years ago. There’s some indication that some artifacts go back beyond 30,000 years, but so far the evidence isn’t strong enough to make a firm claim, Ardelean said.

Ardelean said he believed people probably used the cave as a winter shelter for short periods of time. His team was unable to recover any human DNA from the cave.

Philippines Latest News, Philippines Headlines

Similar News:You can also read news stories similar to this one that we have collected from other news sources.

Higit 600 stranded sa Manila North Harbor
Source: ABSCBNNews - 🏆 5. / 83 Read more »

Chinese vessels fishing illegally in North Korea waters: study
Source: ABSCBNNews - 🏆 5. / 83 Read more »

Chinese vessels fishing illegally in North Korea waters – studyAt least 900 'dark' fishing boats of Chinese origin – vessels which are not detected by public monitoring systems – poached in North Korean waters in 2017, the researchers found, with 700 doing so the following year. READ:
Source: rapplerdotcom - 🏆 4. / 86 Read more »

Foreign terrorists’ presence no longer monitored by militaryThe military is no longer monitoring the presence of foreign terrorists in the central and the western part of Mindanao in the past few weeks despite aggressive surveillance and intelligence-gathering. These are the terrorists i am afraid of: 1. Those who deprive us of access to our faith 2. Those who want no cross in hospitals rooms 3. Those who take jobs away I guess the military realized that they are being killed by the police ... terrorists are here Cause they are now after poor filipino dissenters red tagged as terrorist. What a misleading headline
Source: manilabulletin - 🏆 25. / 51 Read more »

Move to buy fan pages can be used as propaganda tool vs ABS-CBN: strategistDapat honest 🙄 I think i saw a pig somewhere
Source: ABSCBNNews - 🏆 5. / 83 Read more »

Microsoft earnings beat forecasts, thanks to demand for remote-work toolsMicrosoft earnings easily beat analysts' expectations for the most recent quarter, as the pandemic drove demand for the company's cloud and remote collaboration tools.
Source: CNN Philippines - 🏆 13. / 63 Read more »