Science & Technology
The 40-second video consists of a series of images captured over a 22-hour period between May 2 and 3. Magnetic forces pulled at the strands, turning them into twisting lines that stretched across the surface of the sun.
NASA's Solar Dynamics Observatory used a camera which isolates ultraviolet light to capture the mesmerizing show. Despite being several times the size of the earth, according to NASA, the strands are not expected to cause any havoc elsewhere in the solar system.

Abell 370 is one of the first galaxy clusters in which astronomers observed gravitational lensing, the warping of space-time by the cluster’s gravitational field that distorts the light from galaxies far behind it. Arcs and streaks in the picture are the stretched images of background galaxies.
The telescope, run jointly by NASA and the European Space Agency, imaged a region six billion light-years away containing the galaxy cluster Abell 370.
Gravitational lensing, first proposed by physicist Albert Einstein in his general theory of relativity, warps space-time, bending light. In the case of this image, galaxies beyond the cluster spread out along multiple paths and appear in a few locations.
The longest streak in the image is the most dramatic display of lensing: there are four separate images of the single galaxy as the stretches and bends in an arc. In fact, all the arcs in this image are galaxies being bent through gravitational lensing.
Homo naledi, a newly added species to human family tree may have lived alongside our early ancestors

This reconstruction of Homo naledi by paleoartist John Gurche was crafted from skull remains from the Rising Star cave system's Dinaledi and Lesedi Chambers. H. naledi had primitive skeletal features, but the face, skull, and teeth show enough modern features to justify its placement in the genus Homo.
First discovered in 2013 by two cavers exploring the Rising Star cave system near Johannesburg, a stunning trove of hominin remains—the single richest fossil site of its kind ever found in Africa—revealed a tiny-brained species with shoulders and a torso like an ape's, but with some unshakably humanlike features as well. The mosaic's name: Homo naledi, after the Sesotho word for "star."
Now, the species's star shines that much brighter. In papers published Tuesday in eLife, the team—led by University of the Witwatersrand (Wits) paleoanthropologist Lee Berger—provides an age range for the remains first reported in 2015: between 236,000 and 335,000 years old. The team also describes a second chamber within Rising Star that contains yet-undated H. naledi remains.
Poultry sludge is sometimes turned into fertilizer, but recent trends in industrialized chicken farming have led to an increase in waste mismanagement and negative environmental impacts, according to the United Nations Food and Agriculture Organization. Droppings can contain nutrients, hormones, antibiotics and heavy metals and can wash into the soil and surface water. To deal with this problem, scientists have been working on ways to convert the waste into fuel. But alone, poultry droppings don't transform well into biogas, so it's mixed with plant materials such as switch grass.
Samuel O. Dahunsi, Solomon U. Oranusi and colleagues wanted to see if they could combine the chicken waste with Tithonia diversifolia (Mexican sunflower), which was introduced to Africa as an ornamental plant decades ago and has become a major weed threatening agricultural production on the continent.
The researchers developed a process to pre-treat chicken droppings, and then have anaerobic microbes digest the waste and Mexican sunflowers together. Eight kilograms of poultry waste and sunflowers produced more than 3 kg of biogas -- more than enough fuel to drive the reaction and have some leftover for other uses such as powering a generator. Also, the researchers say that the residual solids from the process could be applied as fertilizer or soil conditioner.

An acoustic recording station at Alcatraz Island in San Francisco Bay, Golden Gate National Park, California.
Researchers found that noise pollution was twice as high as background sound levels in a majority of U.S. protected areas, and caused a ten-fold or greater increase in noise pollution in 21 percent of protected areas.

A baby at a swimming class in Iceland. This class is at Ungbarnasund Erlu in Reykjavik.
According to his research, children as young as four months old can stand by themselves, if they receive the right stimulation and exercise.
Researchers from DCS Corp and the Army Research Lab fed datasets of human brain waves into a neural network — a type of artificial intelligence — which learned to recognize when a human is making a targeting decision. They presented their paper on it at the annual Intelligent User Interface conference in Cyprus in March.
Why is this a big deal? Machine learning relies on highly structured data, numbers in rows that software can read. But identifying a target in the chaotic real world is incredibly difficult for computers. The human brain does it easily, structuring data in the form of memories, but not in a language machines can understand. It's a problem that the military has been grappling with for years.
"We often talk about deep learning. The challenge there for the military is that that involves huge datasets and a well-defined problem," Thomas Russell, the chief scientist for the Army, said at a recent National Defense Industrial Association event. "Like Google just solved the Go game problem."
This was the fourth flight of this vehicle. Boeing started the secret X-37B Orbital Test Vehicle project under NASA's aegis in 1999. Originally, the reusable X-37 was intended to repair satellites in orbit. However, in 2004 the program was classified and handed over to the US Air Force.
According to the US Air Force, the X-37B Orbital Test Vehicle is "the newest and most advanced re-entry spacecraft."
Researchers at Georgia Institute of Technology looked at a historic dataset of ocean information stretching back more than 50 years and searched for long term trends and patterns. They found that oxygen levels started dropping in the 1980s as ocean temperatures began to climb.
"The oxygen in oceans has dynamic properties, and its concentration can change with natural climate variability," said Taka Ito, an associate professor in Georgia Tech's School of Earth and Atmospheric Sciences who led the research. "The important aspect of our result is that the rate of global oxygen loss appears to be exceeding the level of nature's random variability."
The study, which was published April in Geophysical Research Letters, was sponsored by the National Science Foundation and the National Oceanic and Atmospheric Administration. The team included researchers from the National Center for Atmospheric Research, the University of Washington-Seattle, and Hokkaido University in Japan.
Falling oxygen levels in water have the potential to impact the habitat of marine organisms worldwide and in recent years led to more frequent "hypoxic events" that killed or displaced populations of fish, crabs and many other organisms.
But there is a disconnect. Comparing the body to a machine, complete with bugs to be fixed by means of gene modification tools such as Crispr-Cas9, conflicts with Charles Darwin's theory of evolution: machines and computers do not evolve, but organisms do. Evolution matters here because bits of code that compromise one function often enhance a second function, or can be repurposed for a new function when the environment shifts. In evolution, everything is grasping for its purpose. Parts that break down can become the next best thing.











Comment: "Although plants can't hear..." Plants do respond to vibration, which is the main component of sound. One might be able to make a case that noise directly, rather than indirectly, affects plants.