Cheap and fast algorithms are matching—and surpassing—the world’s top models
NuScale Power’s small modular reactors promised cheaper nuclear power, but costs soared and utilities balked
Verve Therapeutics says its base-editing approach may help prevent heart disease in many people
In thinking about the challenge of getting artificial intelligence (AI) to understand our complex world, I recalled a Twitter post from a user of Tesla’s self-driving system. The user tweeted that his car kept stopping abruptly at a particular location for no apparent reason. Then he noticed a billboard advertisement on the side of the road, featuring a sheriff holding up a stop sign. The car’s vision system had interpreted this as an actual stop sign, and slammed on the brakes.
After 2000 years of isolation, a few decades of interbreeding have rendered the animal “genomically extinct”
BY DAVID GRIMM
Though it lies in ruins on the northeast coast of England, Kilton Castle was once an imposing stone fortress, home to several noble families, and—it appears—at least eight cats. Archaeological excavations in the 1960s uncovered a well, at the bottom of which lay the bones of several felines dating back to the 14th century. The animals were an odd mix: Some were domestic cats, but other, larger specimens appeared to be European wildcats, a fierce, burly species that has inhabited the continent for hundreds of thousands of years.
“Hubble tension” could be a signal of new physics. But deciphering it may not be simple
Cleft in fossil skull suggests solution to a long-standing mystery: shoulder tissue evolved from gill arches
Emotional memories are consolidated during REM sleep
If you pause for a second and think about the activities that occupy most of your day, presumably sleeping, eating, and engaging in social interactions are among the first that come to your mind. Perhaps surprisingly, a small area buried deep inside the brain, called the hypothalamus, is responsible for coordinating neuronal signals related to these activities. By controlling the homeostasis of the neuroendocrine, limbic, and autonomic nervous systems, the hypothalamus is a key brain region for many physiological and pathological processes. Despite its small size, the hypothalamus has a complex cellular organization and circuitry that determine its structural and functional organization. It is composed of 11 nuclei grouped by their location and has vast, mostly bidirectional connections with many neuronal and endocrine systems.
Plants bred or engineered to be short can stand up better to windstorms. They could also boost yields and benefit the environment
To an interstate traveler—or anyone lost in a corn maze—the most impressive feature of corn is its stature. Modern corn can grow twice as tall as a person, but height has drawbacks, making the plants vulnerable to wind and more difficult for farmers to tend. Plant scientists think corn can be improved by making it shorter, and leading seed companies are doing that through both conventional breeding and genetic engineering. Bayer has launched a short variety in Mexico, another company is selling its versions in the United States, and more are getting involved.
Past the halfway point, Extremely Large Telescope prepares to receive first mirrors
A web of steel girders is rising from the flattened summit of Cerro Armazones, 3000 meters above sea level in Chile’s Atacama Desert. The dome it will support will be vast—with a footprint as big as a soccer field and almost as tall as the Statue of Liberty— and unexpectedly nimble: It will smoothly rotate on rails as a giant telescope inside tracks stars through the night.
Co-developer of biotech’s drug couldn’t supply original data
Gas could replace fossil fuels and fight climate change—if it is made cleanly
A cell census provides information on the source of human brain specialization
The brain is composed of multiple regions associated with distinct functions, which have become further specialized in the human lineage. To define how this specialization is implemented, how it arises during development, and how it has emerged over the course of human evolution, a detailed understanding of the cells that make up the human brain is required.
Some whale populations are exhibiting unexpected cycles of boom and bust
The wastewater releas e from the Fukushima Daiichi nuclear plant is expected to have negligible effects on people and the ocean
In 2011, the east coast of Japan suffered an earthquake and tsunami that resulted in the meltdown of three of the reactors at the Fukushima Daiichi nuclear plant. This led to an uncontrolled release of large amounts of radioactive material to the surrounding land and to the Pacific Ocean.
A debate about the age of ancient footprints continues
Dating the oldest evidence for the presence of Homo sapiens in the Americas is a matter of ongoing debate. One view is that the earliest such evidence is from 16,000 to 14,000 years ago, after the Last Glacial Maximum (LGM), when people would have crossed the Beringian strait from Siberia over a dry land bridge.
Introducing a special issue of Science
Earth scientists often call climate change a “great global experiment,” which humanity is heedlessly performing as we pump greenhouse gases into the atmosphere. The dire consequences are already becoming clear—not just for the workings of the planet, but for our own health. Over the next few days, the stories in this special package will explore the threats, and how we can minimize them.
From cold viruses to influenza to respiratory syncytial virus, viruses that spread through the air cause billions of infections each year. That makes it important to understand how they will respond to climate change. But little is known so far, except that different viruses will react differently. Measles, for instance, spreads efficiently in all climates, suggesting global warming will make little difference to its transmission.
The Sun’s flare-ups can threaten satellites and electric grids, highlighting need for better forecasts
Scheme to factor giant numbers could be more efficient than 30-year-old Shor’s algorithm
Forthcoming cost estimate for budget-busting mission could lead to strict caps from Congress
Researchers feel increasingly isolated as government moves to restrict internet access
Boomers Daily 