New evidence linking vitamin D deficiency to colorectal cancer risk

Building on a long-standing observation linking vitamin D deficiency to increased risk of colorectal cancer, a new study from University of California San Diego has found countries where people experience lower levels of UVB light often report higher r… Continue reading New evidence linking vitamin D deficiency to colorectal cancer risk→

New optical technique paves the way for “hair-thin” endoscopes

Medical endoscopes may look small, but their tips are actually several millimeters wide, making them too big to image living cells within the body. A new system, however, allows users to view images through a single ultra-thin strand of optical fiber.C… Continue reading New optical technique paves the way for “hair-thin” endoscopes→

The light galaxy at the heart of a dark dispute

Dark matter is considered the glue that holds galaxies together – but a few years ago, a team of astronomers claimed to have found a galaxy that didn’t have any. Other scientists later argued it was a calculation error, but now the original team has us… Continue reading The light galaxy at the heart of a dark dispute→

Astronomers conclude Betelgeuse isn’t dying, it’s just dusty

Astronomers say they’ve closed the case on the mysterious and unprecedented dimming of the supergiant star Betelgeuse in 2019 and 2020. A new study says that the event was caused by a combination of a big dust cloud and a drop in temperature.Continue R… Continue reading Astronomers conclude Betelgeuse isn’t dying, it’s just dusty→

Liquid metal mirrors switch reflectivity on and off with a zap

Engineers have found a way to make liquid metals switch between reflective surfaces or those that scatter light. The transition only requires a small zap of electricity and could be used to make mirrors that can be switched on or off.Continue ReadingCa… Continue reading Liquid metal mirrors switch reflectivity on and off with a zap→

Vitamin D deficiency linked to opioid addiction

Fascinating new research led by scientists from Massachusetts General Hospital has found a strong link between opioid addiction and vitamin D deficiency. The research indicates subjects with low vitamin D levels may experience heightened euphoric effec… Continue reading Vitamin D deficiency linked to opioid addiction→

Astronomers discover dying echoes of a supermassive black hole

Japanese astronomers have discovered the echoes of a “dying” supermassive black hole. While the object is quiet now, the team spotted the signatures of two huge radio jets that indicate it only recently fell silent after a bright, active phase.Continue… Continue reading Astronomers discover dying echoes of a supermassive black hole→

Quantum microscope breaks through fundamental barrier to image clarity

Australian researchers have demonstrated a quantum microscope that can break through a fundamental barrier faced by regular microscopes and see tiny structures that are normally invisible. The device “squeezes” light to snap images with far greater cla… Continue reading Quantum microscope breaks through fundamental barrier to image clarity→

New instrument begins measuring total light ever emitted in the universe

A new instrument made a short jaunt to space on the weekend, as part of a mission to measure the total light ever emitted over the universe’s history. The CIBER-2 project will search for stray stars hiding between galaxies by monitoring the cosmic back… Continue reading New instrument begins measuring total light ever emitted in the universe→