Technology
Ancient footprints push back date of human arrival in the Americas
Footprints dating back 23,000 years have been discovered in the United States, suggesting humans settled North America long before the end of the last Ice Age, research published Thursday showed.
The findings push back the date at which the continent was colonized by its first inhabitants by thousands of years. The footprints were left in mud on the banks of a long-since dried-up lake, which is now part of a New Mexico desert.
Sediment filled the indentations and hardened into rock, protecting evidence of our ancient relatives, and giving scientists a detailed insight into their lives. “Many tracks appear to be those of teenagers and children; large adult footprints are less frequent,” writes the authors of the study published in the American journal Science.
“One hypothesis for this is the division of labor, in which adults are involved in skilled tasks whereas ‘fetching and carrying’ are delegated to teenagers. “Children accompany the teenagers, and collectively they leave a higher number of footprints.”
Researchers also found tracks left by mammoths, prehistoric wolves, and even giant sloths, which appear to have been around at the same time as the humans visited the lake. The Americas were the last continent to be reached by humanity.
For decades, the most commonly accepted theory has been that settlers came to North America from eastern Siberia across a land bridge — the present-day Bering Strait.
News Source : Nature
.jpg "SpiceJet announces 8 new flights to connect Jaipur with Varanasi, Amritsar and Ahmedabad")
SpiceJet expands its domestic network with 8 new flights that will connect Jaipur with Varanasi, Amritsar and Ahmedabad and also link Ahmedabad with Pune.
SpiceJet is further expanding its domestic network with the launch of eight new flights starting November 15.
In the statement released on Wednesday, the airline announced that these new routes will connect Jaipur with Varanasi, Amritsar and Ahmedabad, while also linking Ahmedabad with Pune. This expansion follows the recent launch of 32 new flights in October 2024, including two international flights connecting Delhi with Phuket.
Last month, SpiceJet also commenced UDAN flights linking Shivamogga in Karnataka with Chennai and Hyderabad, and introduced double daily flights between Chennai and Kochi, enhancing connectivity across key regional and metropolitan cities.
“We are excited to announce the launch of new flights from Jaipur to Varanasi, Amritsar, and Ahmedabad, as well as from Ahmedabad to Pune, providing our passengers with greater flexibility and convenience,” SpiceJet Chief Business Officer Debojo Maharshi said.
“These new flights reflect our commitment to supporting passenger demand across tier-II cities and beyond. With our expanded winter schedule, including international and UDAN routes, we aim to provide our customers with greater convenience, affordability, and seamless travel experiences,” Maharshi added.
SpiceJet will deploy its 78-seater Q400 aircraft in these sectors. Bookings for the new flights are now open and tickets are available at the website of the airline, SpiceJet’s mobile app and through online travel portals and travel agents.
On Monday, the airline received a significant boost, with Acuite Ratings & Research Limited upgrading its long-term rating by four notches to ‘B ‘ and its short-term rating to A4. The rating agency has also assigned a ‘Stable’ outlook to the airline.
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