Toggle light / dark theme

Scientists have created the world’s first living, self-healing robots using stem cells from frogs.

Named xenobots after the African clawed frog (Xenopus laevis) from which they take their stem cells, the machines are less than a millimeter (0.04 inches) wide — small enough to travel inside human bodies. They can walk and swim, survive for weeks without food and work together in groups.

These are “entirely new life-forms,” said the University of Vermont, which conducted the research with Tufts University.

African swine fever has wiped out a third of China’s pig population. Now government officials are discussing dramatic steps to stabilize the world’s largest pork market.

Pork is a huge deal in China. The country is home to half of all the pigs on the planet. The meat is a staple of the Chinese diet, which means its scarcity could damage China’s social stability. The outbreak of swine fever also threatens to upend the global pork supply chain.

While Chinese authorities have already made plans to shore up the pig market — including subsidies for pig farms and families who may struggle with soaring prices — they’re stepping up efforts to deal with the crisis.

#biophotonics #photonics


ONNA, Japan, Jan. 13, 2020 — Scientists at the Okinawa Institute of Science and Technology (OIST) Graduate University have developed a light-based device that can act as a biosensor, detecting biological substances in materials, such as harmful pathogens in food. The scientists said that their tool, an optical microresonator, is 280× more sensitive than current industry-standard biosensors, which can detect only cumulative effects of groups of particles, not individual molecules.

Maintaining five healthy habits—eating a healthy diet, exercising regularly, keeping a healthy body weight, not drinking too much alcohol, and not smoking—at middle-age may increase years lived free of type 2 diabetes, cardiovascular disease, and cancer, according to a new study led by Harvard T.H. Chan School of Public Health.


People who practice healthy habits at age 50 lived more years free of chronic diseases compared to those who did not practice any of these habits. Women who practiced all five habits gained about ten years of disease-free life, and men who did so gained about eight years. A healthy lifestyle not only improves lifespan (overall life expectancy) but also healthspan (healthy or disease-free life expectancy).

Location: Manhattan, KS

NBAF - National Agor-Defense Facility

The National Bio and Agro-Defense Facility (NBAF) will be a state-of-the-art biocontainment laboratory for the study of diseases that threaten both America’s animal agricultural industry and public health. DHS S&T is building the facility to standards that fulfill the mission needs of the U.S. Department of Agriculture (USDA) which will own, manage and operate (PDF, 16 pgs., 165 KB) the NBAF once construction and commissioning activities are complete. The NBAF will strengthen our nation’s ability to conduct research, develop vaccines, diagnose emerging diseases, and train veterinarians. DHS S&T will leverage the facility as a national asset to fulfill homeland security mission needs.

The United States currently does not have a laboratory facility with maximum biocontainment (BSL-4) space to study high-consequence zoonotic diseases affecting large livestock. The NBAF will be the first laboratory facility in the U.S. to provide BSL-4 laboratories capable of housing cattle and other large livestock. The NBAF will also feature a vaccine development module. For more information about the facility and intended use of its state-of-the-art features, please visit the USDA NBAF Program website.