Two in five preclinical studies on subarachnoid hemorrhage (SAH) published in peer-reviewed scientific journals contain problematic images. A team of researchers from Radboud University Medical Center, who had previously identified several such cases, analyzed the literature in this field to assess the scope of the issue. They found that 40% of the studies included suspicious images.

Dexcom Inc. executives may have thought a $30 million beat of the consensus estimates for third quarter revenue and 20% year-over-year organic growth provided a treat to shareholders, but investors seemed to feel tricked instead. The continuous glucose monitoring powerhouse saw its share price drop a frightening 17% in the first two hours of trading on Oct. 31, pushing it down by one-third from its peak of $89.53 in late July. Investors appear to have been spooked by the company’s conservative projections for 2026, following issues with its G7 sensor, which management said have been largely resolved.

Scientists in the U.K. are developing glucose-powered bioelectronics to advance the use and capabilities of implantable medical devices. A research team, led by the University of Bath, received £2.1 million (US$3.3 million) in funding from the government to develop miniature, lightweight and long-lasting glucose fuel cells to help address the invasiveness and limitations of current battery-powered implants.

Bowhead whales (Balaena mysticetus) live year-round in the icy or near-icy waters of the Arctic and sub-Arctic. Although they migrate with the seasonal cycles of ice formation and melting, they never reach the warmer waters visited by other large marine mammals. Their adaptation to low temperatures may have also enabled them to live longer and avoid cancer, a disease closely linked to aging.