Tag Archives: DNA

Oldest DNA Sequenced Yet Comes From Million-Year-Old Mammoths

Woolly mammoths were icons of the Ice Age. Starting 700,000 years ago to just 4,000 years ago, they trundled across the chilly steppe of Eurasia and North America. As ancient glaciers expanded across the Northern Hemisphere, these beasts survived the rapidly cooling temperatures with cold-resistant traits, a characteristic they came by not through evolution, as earlier thought. Woolly mammoths, a new Nature study finds, inherited the traits that made them so successful from a mammoth species closer to a million years old.

Gene editing could help eliminate HIV

Around five years ago, when the gene editing technology CRISPR was still new, Kamel Khalili started work on ways to use the system to treat and cure HIV. Khalili, director of the Comprehensive NeuroAIDS Center at the Lewis Katz School of Medicine at Temple University, showed then that CRISPR could effectively clear HIV in both cells and in animals.

Continue reading Gene editing could help eliminate HIV

Analysis of Ancient DNA Suggests Finnish and Estonian Languages Came From Siberia

Northern Europeans who speak Uralic languages, such as Estonian and Finnish, can thank ancient migrating Siberian populations for their dialects, according to a fascinating new study that combined genetics, archaeology, and linguistics. Continue reading Analysis of Ancient DNA Suggests Finnish and Estonian Languages Came From Siberia

A Scottish Woman Doesn’t Feel Pain or Stress. Now Researchers Think They Know Why

When she was eight years old, Jo Cameron broke her arm and didn’t tell anyone for days; it just wasn’t bothering her. In the six-odd decades since, she has sustained numerous injuries and felt barely any pain. Sometimes, she accidentally leans on her stove, only to notice when she smells burning flesh. Continue reading A Scottish Woman Doesn’t Feel Pain or Stress. Now Researchers Think They Know Why

Mosquitoes Can Smell Your Sweat

When a mosquito lands and your arm and starts taking a drink, it’s not just an unhappy accident. Mosquitoes use an array of chemical neuroreceptors to track down their next blood meal. Now, researchers have identified a key receptor that detects the lactic acid in human sweat, a finding that could eventually help people avoid becoming fast food for the insects. Continue reading Mosquitoes Can Smell Your Sweat

A NEW METHOD OF DNA TESTING COULD SOLVE MORE SHOOTINGS

POLICE FOUND 19 spent shell casings scattered in the San Diego street where Gregory Benton was murdered on April 12, 2014. Benton and his cousin had gone to buy cigarettes, a witness later said. As they returned to a family party, two men pulled up in a car behind them. They got out, and at least one of them opened fire. Continue reading A NEW METHOD OF DNA TESTING COULD SOLVE MORE SHOOTINGS