Science - Khabar 24x12

Yale researchers found a new way to tackle ‘forever chemicals’: they make some PFAS molecules roughly twice as large so they separate from water and become easier to destroy

S Bhinder3 weeks ago06 mins

[ad_1] forever checmicals(Representative image) Per- and polyfluoroalkyl substances (PFAS) are often called “forever chemicals” because their ultra-strong carbon–fluorine bonds make them stubbornly resistant to breakdown in the environment. They’re prized in industry for repelling water, oil and heat, but that same durability means they persist in soil, water and living tissue long after use. Now,…

An invasive beetle wiped out black ash trees across parts of North America; scientists germinated 22,000 seeds, including genetic material from tree populations that no longer survive in the wild

S Bhinder3 weeks ago04 mins

[ad_1] An invasive beetle wiped out black ash trees across parts of North America Researchers have created a living seed bank to protect North America’s endangered black ash trees from extinction after decades of damage from an invasive insect. Led by scientists at Pennsylvania State University, the conservation project has successfully germinated 22,000 black ash…

In 2002, a NASA intern stole a 600-pound safe containing $21 million in Moon rocks to give his girlfriend, then an online sale led him into an FBI trap |

S Bhinder3 weeks ago06 mins

[ad_1] The Moon has been romanticised for centuries, but few people have ever tried to give someone a piece of it. In 2002, that idea became part of an extraordinary theft at Nasa’s Johnson Space Center, where an intern helped remove a safe containing Apollo lunar samples and other irreplaceable scientific material. The stolen collection…

Meet Aashritha Penumudi, the 17-year-old Virginia student who created stalled ribosomes in the lab and trained AI on breast-cancer data; its predictions matched what she saw under the microscope

S Bhinder3 weeks ago04 mins

[ad_1] Aashritha Penumudi (Thomas Jefferson High School for Science and Technology, Alexandria, VA) By combining laboratory biology with machine learning, a 17-year-old student from Virginia has gained new insights into how protein production can go wrong in cancer cells. Aashritha Penumudi, a senior at Thomas Jefferson High School for Science and Technology in Alexandria, studied…

Meet Alyssa Yu, the 17-year-old Maryland student who built a mathematical model for what happens when 2 interacting infections spread at once and how vaccination could target the resulting hot spots

S Bhinder3 weeks ago04 mins

[ad_1] Alyssa Yu (Poolesville High School, Poolesville, MD) A 17-year-old student from Maryland has developed a new mathematical framework to predict how multiple infectious diseases interact and spread through connected populations at the same time. Alyssa Yu, a senior at Poolesville High School in Montgomery County, created the computer model to address a major gap…

In 1920, Arizona introduced bullfrogs as a game species and food source; a century later, the invasive frogs are threatening the Northern Mexican gartersnake |

S Bhinder3 weeks ago04 mins

[ad_1] A pond in southern Arizona can look quiet from a distance. Beneath the surface, though, the balance between species can be very different from what it was a century ago. Among the animals affected is the northern Mexican gartersnake, a wetland-dependent reptile that hunts along streams, ponds and cienegas across parts of the Southwest.Its…

Scientists found traces of two unknown ancient human lineages hiding in modern DNA; one split from our ancestors about 800,000 years ago, another around 1.8 million years ago |

S Bhinder3 weeks ago04 mins

[ad_1] Representative Image of ancient human evolution showing the genetic connections between humans, Neanderthals, and Denisovans (AI-generated image) Modern humans already carry small amounts of Neanderthal and Denisovan DNA, evidence that our ancestors interbred with other human groups tens of thousands of years ago. Both lineages are known from ancient remains, including fossils from which…

240,000 miles from Earth, Nasa is building the world’s first ‘space airport’ for the Moon, where spacecraft will have to queue for weeks to avoid traffic |

S Bhinder3 weeks ago08 mins

[ad_1] Nearly 240,000 miles from Earth, Nasa is preparing a new kind of transportation hub where spacecraft could one day arrive, wait, dock and depart without a single runway, road or parking bay. The Gateway space station, planned for lunar orbit as part of the Artemis programme, is expected to host Orion crew capsules, lunar…

The human brain usually decays first after death, so how have thousands survived for 12,000 years? Scientists uncover the chemistry behind the mystery

S Bhinder3 weeks ago05 mins

[ad_1] Representative Image (Canva) The human brain is one of the first organs to break down after death, making the discovery of preserved brains at archaeological sites particularly puzzling. Yet thousands of ancient human brains have survived long after other soft tissues disappeared, sometimes remaining as the only preserved soft tissue in otherwise skeletonised remains….

electra takes a different approach to hybrid aviation instead of a traditional engine operating the

In 2017, an MIT class project explored a new kind of aircraft; it has now grown into an $850 million Ohio factory plan for an 8-motor hybrid plane that can take off from an area about the length of a soccer field

S Bhinder3 weeks ago05 mins

[ad_1] Electra takes a different approach to hybrid aviation. Instead of a traditional engine operating the propellers, the aircraft has a gas-powered generator in the nose. (Image: MIT News) A class project at the Massachusetts Institute of Technology (MIT) in 2017 studied a new type of aircraft; now, it has ballooned into a $850 million…