- Yahoo!
- 20/8/20 23:11
More than 230 million years ago, a giant, dolphin-like marine reptile known as an ichthyosaur devoured its final meal -- a creature almost its own size -- then died a short time...
357 articles from THURSDAY 20.8.2020
More than 230 million years ago, a giant, dolphin-like marine reptile known as an ichthyosaur devoured its final meal -- a creature almost its own size -- then died a short time...
Physicists have taken a step toward making 'metalenses' even more useful -- by making them reconfigurable. They did this by harnessing nanoscale forces to infiltrate liquid crystals between those microscopic pillars, allowing them to shape and diffract the light in completely new ways -- 'tuning' the focusing power, one of the researchers said.
Researchers have fashioned ultrathin silicon nanoantennas that trap and redirect light, for applications in quantum computing, LIDAR and even the detection of viruses.
On-duty firefighters experienced higher exposures of polycyclic aromatic hydrocarbons, or PAHs, which are a family of chemicals that are known to have the potential to cause cancer.
Over the course of the coronavirus epidemic, COVID-19 outbreaks have hit communities across the United States. As clusters of infection shift over time, local officials are forced into a whack-a-mole approach to allocating resources and enacting public health policies. Geographers hope that timely, localized data will help inform future decisions, and one day predict where hotpots will emerge.
Scientists have discovered a molecule that can activate a natural immune-boosting protein called STING. The findings mark a key advance in the field of oncology, as the STING protein is known for its strong antitumor properties.
Nasa spacecraft makes final preparations to gather material from Bennu’s surface in October Nasa’s Osiris-Rex (origins, spectral interpretation, resource identification, security, regolith explorer) asteroid mission has performed its final practice run for its forthcoming sample collection manoeuvre.The spacecraft is 288m km from Earth, in orbit around the asteroid Bennu. On 20 October it is...
Scientists are gaining new insight into the ancient Egyptian practice of mummifying animals, using high-resolution 3D scans to peer inside mummies of a cat, a bird and a snake to learn about their treatment before being killed and embalmed. Researchers on Monday said they digitally "unwrapped" and "dissected" the three mummies using X-ray micro CT scanning, which generates three-dimensional...
Using a high-resolution x-ray technique, researchers peeked under the wrappings of mummified animals to assess how they...
A new Oregon State University study suggests that firefighters are more likely to be exposed to potentially harmful chemicals while on duty compared to off duty.
The age of molecular-scale computing is entering a new era, thanks to the development of a system that uses synthetic proteins and Boolean logic to identify cancer cells. The proteins can lock onto chemical markers on the surface of cells in predetermined combinations, performing the roles of logical AND, OR and NOT gates. It's similar to the way binary computers do their thing, but with...
Fish may not be the only victims of the pollution and hot temperatures that drove oxygen to insufficient levels in Biscayne Bay and led to a mortality event that shocked Miami residents last week.
A new measurement technology developed at the University of Bern provides unique insights into the climate of the past. Previous CO2 concentrations in the atmosphere could be reconstructed more accurately than ever before, thanks to high-resolution measurements made on an Antarctic ice core. The study, which analyzed the Earth's atmospheric composition between 330,000 and 450,000 years ago, was...
NASA provided a series of photos of Hurricane Genevieve as it affected Mexico's southern Baja California peninsula. An astronaut aboard the International Space Station provided wide-angle photos of Genevieve, showing the size of the storm. Warnings and watches are in effect on Aug. 20.
One of the top four crops grown worldwide, soybean has been an integral part of Chinese agriculture for a long time, having been domesticated more than 6000 years ago. During the domestication process, certain traits are selected that make plants easier to cultivate and cook and other traits can be lost. Wild ancestors of domesticated crops can be important reservoirs of agronomic traits that have...
The aim is to reduce insect-borne diseases but environmental groups warn of unforeseen consequences.
At the MIT community vigil held in June 2020 in the wake of George Floyd’s death, Corban Swain, a PhD student in biological engineering, read two of his poems on racism. Listen here. Courtesy of Corban Swain
Check out the virtual MIT campus on this guided tour by Amanda Shayna Ahteck ’23. Courtesy of Amanda Shayna Ahteck ’23
Researchers used an ultrathin graphene 'sandwich' to create a tiny magnetic field sensor that can operate over a greater temperature range than previous sensors, while also detecting miniscule changes in magnetic fields that might otherwise get lost within a larger magnetic background.
Medical researchers noted improvements in body composition, fat distribution and metabolic health in response to an eight-week very low-carbohydrate diet. Older adults with obesity are at particularly high risk of developing cardiometabolic disease such as Type 2 diabetes and cardiovascular disease. Rather than total fat mass, deposition of fat in certain areas, such as the abdominal cavity and...
Even in earlier warm periods there were pulse-like releases of CO2 to the atmosphere. Today's anthropogenic CO2 rise, however, is more than six times larger and almost ten times faster than previous jumps in the CO2 concentration.
A rocket is going up into space with a drag sail. The goal? For the drag sail to bring the rocket back to Earth, preventing it from becoming like the thousands of pieces of space junk in Earth's lower orbit.
Salvage crews on Thursday began the process of sinking the broken stem of a Japanese-owned ship which ran aground off Mauritius, leading to a major oil spill and ecological disaster for the Indian Ocean island.
VACAVILLE, Calif. -- How many things can go wrong at once?On Wednesday millions of California residents were smothered by smoke-filled skies as dozens of wildfires raged out of control. They braced for triple-digit temperatures, the sixth day of a punishing heat wave that included a recent reading of 130 degrees in Death Valley. They braced for possible power outages because the state's grid...
A team of researchers from the University of Hawai'i (UH) at Mānoa School of Ocean and Earth Science and Technology (SOEST) identified a global tendency for future sea levels to become more variable as oceans warm this century due to increasing greenhouse gas emissions. Sea level variability alters tidal cycles and enhances the risks of coastal flooding and erosion beyond changes associated with...