Toward preselected sex
Robert Edwards and Richard Gardner of Cambridge University … say they have been able to remove rabbit embryos … then reimplant only the blastocysts destined to develop into the chosen sex. The implications are obvious and enormous. If this procedure could be extended easily to man there might, for instance, be imbalances, even fads, in the selection by parents...
Meghalayan\mehg-a-LAY-an \ n.07/20/2018 - 07:00 Earth, Climate, Anthropology
The newly named current geologic age that started 4,200 years ago.
Welcome to the Meghalayan, our geologic here and now. It’s one of three newly designated ages divvying up the Holocene Epoch, a geologic time period kicked off 11,700 years ago by the end of the Ice Age.
First came a warming period, now dubbed the Greenlandian Age. Then, about 8,300...
Deep water reefs are unlikely to be safe harbors for many fish and coral species from shallow reefs threatened by climate change and human activity. Shallow water creatures may have trouble adapting to conditions in the deep, scientists report in the July 20 Science. Plus, deep reefs are facing the same threats that are putting shallower ones at risk.
The study deals a blow to the “deep...
A newly identified dinosaur’s evolutionary origins are written all over its face.
Bony knobs studding the head and snout of Akainacephalus johnsoni, a type of armored dinosaur called an ankylosaurid, are similar to those of Asian ankylosaurids. That was a surprise, says Jelle Wiersma, a paleontologist at James Cook University in Townsville, Australia. He and Randall Irmis, a...
If the secret to getting the perfect photo is taking a lot of shots, then one lucky fruit fly is the subject of a masterpiece.
Using high-speed electron microscopy, scientists took 21 million nanoscale-resolution images of the brain of Drosophila melanogaster to capture every one of the 100,000 nerve cells that it contains. It’s the first time the entire fruit fly brain has been imaged...
News in Brief
An intergalactic race between light and a bizarre subatomic particle called a neutrino has ended in a draw.
The tie suggests that high-energy neutrinos, which are so lightweight they behave as if they’re massless, adhere to a basic rule of physics: Massless particles travel at the speed of light.
Comparing the arrival times of a neutrino and an associated blaze of high-energy light...
Painkillers crafted with a part of the wrinkle-smoothing drug Botox provide long-term pain relief in mice.
Researchers added the modified Botox to molecules that target pain-messaging nerve cells. Mice given a single spinal injection of the new drugs showed signs of pain relief for the full duration of the experiments, around three weeks, researchers report online July 18 in Science...
Like a submarine Poké Ball, a new robotic device gently captures and releases deep-sea creatures without a scratch. This critter catcher could be decked out with cameras and other sensors to give scientists an unprecedented view of life in one of Earth’s most mysterious environments.
The contraption, designed to be mounted on a remotely operated underwater vehicle, folds into a 12-sided...
News in Brief
The first known fossil remains of a baby snake have turned up in a hunk of amber found in Myanmar. The critter, a new species named Xiaophis myanmarensis, met its untimely demise about 99 million years ago, during the Cretaceous Period, an international team of researchers reports July 18 in Science Advances.How do we know it’s a baby?
First, it’s tiny. The skeleton, which is missing its...