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Researchers who won a medicine Nobel prize for DNA discovery were also up for chemistry award

The discovery of the DNA double helix 60 years ago proved to be a headache for the Nobel organisation as the feat became nominated for prizes in different categories at the same time, Nature reported on Wednesday. Francis Crick and Maurice Wilkins of Britain and James Watson of the United…

Robot discovers ancient burial chambers in Mexico

A small robot has discovered three possible burial chambers under a temple in Mexico’s pre-Hispanic city of Teotihuacan, a find that may reveal secrets about funeral rituals in the ancient site. The robot, dubbed Tlaloc II-TC, located the chambers in the last section of a 2,000-year-old tunnel tucked under the…

Australia originally settled by 1,000-3,000 people 50,000 years ago

Australia was first settled by between 1,000 and 3,000 humans around 50,000 years ago, but the population crashed during the Ice Age before recovering to a peak of some 1.2 million people around five centuries ago, a study said on Wednesday. Estimating the early population of Australia is a source…

Experts warn cheetahs could disappear from the wild by 2030

The cheetah, the world’s fastest land animal, survived mass extinction during the last ice age 10,000 years ago. But it has taken just the last few decades for man to place the hunter on the endangered species list, with experts warning it could disappear from the wild by 2030. Unlike…

Researchers: Preventing pediatric firearm injuries should be a priority

Youths who are injured in gun violence are more likely to need intensive care and are much more likely to die from their wounds than children injured by other means, US researchers said Tuesday. The findings, reported in the Journal of the American Medical Association, offer a rare look at…

Reef fish use sign language to communicate prey locations to others

The roving coralgrouper, a predator fish of the tropical reef, uses sign language to advise fellow hunters of hiding prey, according to a study published on Tuesday. It is the first time that a fish has been known to make “referential gestures,” or specific signs that alert a partner to…

Mysterious water on Jupiter came from comet smash

Enigmatic traces of water in the upper atmosphere of Jupiter came from a comet that crashed into the giant planet in 1994, the European Space Agency (ESA) said on Tuesday. Astronomers have been debating the water for 15 years after telltale molecules were spotted by an infrared telescope. Some argued…

Climate change forces India’s apple farmers up the Himalayas

Set in the Himalayas, Kashmir is a green, saucer-shaped valley full of fruit orchards and surrounded by snowy mountain ranges.(Mukhtar Khan/AP/File) The hills of Thanedar-Kotgarh…  …

How the burning of fossil fuels was linked to a warming world in 1938

Seventy-five years ago this month an amateur weather-watcher from West Sussex published a landmark paper in the Quarterly Journal of the Royal Meteorological Society directly linking the burning of fossil fuels to the warming of the Earth’s atmosphere. Guy Callendar was a successful steam engineer by trade, but in his…

Natural compounds in dark chocolate found to increase calmness

Research to be published in the May issue of the Journal of Psychopharmacology has found cocoa polyphenols have a positive impact on mood in healthy individuals. “To our knowledge, this is the first randomized, controlled trial to substantiate the effects of cocoa polyphenols on positive mood states in a non-clinical…

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