Research involving human embryos is famously difficult and fraught with ethical quandaries, but a new synthetically derived model could open new doors in the study of infertility and birth defects.The model comes from the Weizmann Institute of Science in Israel and follows years of research by labs around the world into producing a similar clump of cells. The team led by professor Jacob Hanna claims that their latest iteration is the most advanced so far and contains all the hallmarks of a human ...read more

Alzheimer’s takes a toll on its patients. As the disease progresses, a person’s personality deteriorates, and so, too, does their judgement, their memory, and their motor skills. But a diagnosis of Alzheimer’s dementia affects much more than the individual who is diagnosed. That’s because the disease fosters feelings of fear and loss for the family, friends, and loved ones who witness its destruction, while also causing concerns for those same individuals about their own futures with the ...read more

The James Webb Space Telescope (JWST) has brought us marvelous images of whirlpool galaxies, supernovas and even questionable space phenomena. But building and getting the device operational was an incredible feat of science, involving hundreds of people from all around the world and three space agencies.What Is the James Webb Space Telescope? The telescope isn’t on this planet — it orbits the sun. The JWST was launched on December 25, 2021, at 7:20 a.m. EST. In total, it weighs more than 1 ...read more

In 1914, the biggest story in newspapers across the U.S. was the world war that had recently broken out in Europe with a big question mark hanging over whether the U.S. would take part. The same story dominated the U.S. newspapers in 1915, 1917 and 1918. But in 1916, another story captured the attention of the American public, one that is much less well known today.In that year, the U.S. Army entered Mexico in pursuit of a Mexican paramilitary force that had attacked the town of Columbus in New ...read more

In recent years, scientists have puzzled over a particular class of transients – bursts of intense X-rays and light shot from distant galactic centers. Now, astronomers have discovered a new X-ray transient and are offering an explanation for these outbursts. The new find – located at the center of a galaxy some 500 million light-years away – is early fruit for a new transient detection system that feeds off data produced by the Swift Observatory X-ray telescope.What Are Transients?Astrono ...read more

If you landed on the moon today and conducted a thorough survey of the landscape, you would encounter multiple U.S. flags and a single Chinese one upon its dusty surface.These national symbols, however, bear little weight when it comes to land claims and territorial jurisdiction in this realm. That’s because international terms have established that no nation can claim land in outer space or upon any celestial body – no planet, moon or asteroid.Such places are “the province of all mankind, ...read more

One of the most difficult problems in neuroscience and philosophy is the study of consciousness. How does consciousness arise from physical matter?In a 1995 paper, philosopher David Chalmers dubbed this question "the hard problem." The "easy" problem, he said, is figuring out how the brain does things like see, learn, think and make decisions. While not exactly easy, at least these questions can be approached scientifically and, given the right techniques and technology, might eventually be sol ...read more

Unlike our solitary Sun, most stars form in binary or multiple-star systems. However, astrophysicists haven’t learned a lot about how these complex stellar systems are born because they lack high-resolution observations to distinguish between different theories of formation. But international researchers have now gained some insight with the Atacama Large Millimeter/submillimeter Array (ALMA) in Northern Chile. Their study of IRAS 04239+2436, a triple system of protostars about 460 light-years ...read more

When the garbage truck drives up to my house every week, my three little dogs can barely contain their excitement. They bark and race from one window to the next. At one point, my chihuahua mix will throw back her head and release a dramatic howl.It seems ridiculous to howl at a garbage collector. However, animal behavior researchers have learned howling is a vital form of communication among wolf packs. This behavior lingers among some domesticated dogs, and scientists are learning that dogs ho ...read more

Prehistoric reptiles roamed every corner of the Earth millions of years ago — including the depths of the ocean to streams and rivers. While commonly referred to as aquatic or marine dinosaurs — or reptiles — many of these creatures also spent a significant amount of time out of the water. Some prehistoric marine reptiles came to the surface to breathe or returned to land to lay their eggs. Here are five of the most interesting aquatic reptiles that lived among the dinosaurs.        ...read more