Toggle light / dark theme

Some stars in our galaxy pulse like musical instruments, and scientists have found a way to listen in. These rhythmic starquakes, like vibrations in a string or drum, reveal vital clues about a star’s age, composition, and life cycle.

By studying these “melodies” in a star cluster called M67—whose stars are like solar siblings—researchers uncovered a strange pause in stellar evolution called the “plateau.” This discovery helps pinpoint stellar ages with remarkable precision, bringing us closer to understanding how stars, and ultimately our galaxy, have evolved.

Celestial Music: Listening to Starquakes.

Lariocidin was efficient against strains of E. coli, including drug-resistant ones, according to the new study.

Researchers say they have discovered a new class of antibiotics that could treat drug-resistant bacteria, the first to reach the market in nearly three decades.

The new molecule, called lariocidin, works by targeting a part of a bacteria’s cell called the ribosome and can disrupt the cell’s functions.

The world added the smallest amount of new coal capacity in two decades last year, a report said Thursday, but use of the fossil fuel is still surging in China and India.

Coal accounts for just over a third of global electricity production and phasing it out is fundamental to meeting climate change goals.

Just 44 gigawatts (GW) of new capacity was produced globally last year, the lowest figure since 2004, according to the report by a group of energy-and environment-focused research organizations and NGOs.

Heaviside was born in Camden Town, London, at 55 Kings Street [ 3 ] : 13 (now Plender Street), the youngest of three children of Thomas, a draughtsman and wood engraver, and Rachel Elizabeth (née West). He was a short and red-headed child, and suffered from scarlet fever when young, which left him with a hearing impairment. A small legacy enabled the family to move to a better part of Camden when he was thirteen and he was sent to Camden House Grammar School. He was a good student, placing fifth out of five hundred students in 1865, but his parents could not keep him at school after he was 16, so he continued studying for a year by himself and had no further formal education. [ 4 ] : 51

Heaviside’s uncle by marriage was Sir Charles Wheatstone (1802–1875), an internationally celebrated expert in telegraphy and electromagnetism, and the original co-inventor of the first commercially successful telegraph in the mid-1830s. Wheatstone took a strong interest in his nephew’s education [ 5 ] and in 1867 sent him north to work with his older brother Arthur Wheatstone, who was managing one of Charles’ telegraph companies in Newcastle-upon-Tyne. [ 4 ] : 53

Two years later he took a job as a telegraph operator with the Danish Great Northern Telegraph Company laying a cable from Newcastle to Denmark using British contractors. He soon became an electrician. Heaviside continued to study while working, and by the age of 22 he published an article in the prestigious Philosophical Magazine on ‘The Best Arrangement of Wheatstone’s Bridge for measuring a Given Resistance with a Given Galvanometer and Battery’ [ 6 ] which received positive comments from physicists who had unsuccessfully tried to solve this algebraic problem, including Sir William Thomson, to whom he gave a copy of the paper, and James Clerk Maxwell. When he published an article on the duplex method of using a telegraph cable, [ 7 ] he poked fun at R. S. Culley, the engineer in chief of the Post Office telegraph system, who had been dismissing duplex as impractical.

DNA end resection is crucial for most DNA double-strand break repair pathways. This Review discusses the molecular mechanisms of end resection and its regulation, focusing on the roles of post-translational modifications throughout the cell cycle and in response to DNA damage.

From seat cushions to mattresses to insulation, foam is everywhere—even if we don’t always see it. Now, researchers at The University of Texas at Dallas have fused chemistry with technology to create a 3D-printed foam that is more durable and more recyclable than the polymer foam found in many everyday products.

The research, published in RSC Applied Polymers, focused on creating a sturdy but lightweight that could be 3D-printed, a method that is still largely unexplored in commercial manufacturing, said the study’s co-lead author, UT Dallas doctoral student Rebecca Johnson BS’20.

“This is probably the longest project I’ve ever done,” said Johnson, who plans to complete her Ph.D. in chemistry in May. “From start to finish, it was a little over two years. A lot of it was trying to get the polymer formulation correct to be compatible with the 3D printer.”

The new test could help identify which patients are most likely to benefit from new Alzheimer’s drugs. A newly developed blood test for Alzheimer’s disease not only helps confirm the presence of the condition but also provides information about how far the disease has progressed, according to resea