A frog's gut bacterium erased tumors, and dementia rates keep falling

Among 45 bacterial strains they isolated and grew in the lab, one called Ewingella americana stood out: a single intravenous dose completely eliminated colorectal tumors in mice, a 100 percent complete response rate that beat both a checkpoint-inhibitor drug and chemotherapy used for comparison [3]. The bacterium multiplied about 3,000-fold inside the oxygen-starved core of the tumors within 24 hours, attacking cancer cells directly while also drawing in T cells, B cells, and neutrophils that mounted their own assault.

This is not a fluke of one dataset: a separate study of nearly 50,000 people across six countries in North America and Europe found dementia diagnoses falling 13 percent per decade between 1988 and 2015, and the long-running Framingham Heart Study clocked a 20 percent per-decade drop in new cases across nearly 40 years. People who turned old in 2013 were 44 percent less likely to have dementia than people who turned old in 1978.

They cycled the battery for more than 6,000 hours without a single short circuit, charged it from empty to full in four minutes while it still held 80.1 milliampere-hours per gram, and at a slightly gentler 20-minute charge it retained 90 percent of its capacity over 2,000 cycles, matching the theoretical ceiling of today's lithium-ion cells.

Now two separate research teams have converged on the same one: a cell-surface protein called GPNMB [170]. A team led by Sheila Singh at McMaster engineered CAR T cells against GPNMB that rapidly destroyed glioblastoma, one of the deadliest brain cancers, in patient tissue samples and shrank tumors in mice. A second team used the same target against an aggressive soft-tissue cancer, and in an early trial, one infusion in a single patient stabilized the disease for three months with no serious side effects.

In a small study out of the University of Kansas Medical Center, Alzheimer's patients who took daily creatine for two months showed measurable boosts in brain energy levels and cognitive test scores [83]. Alzheimer's is increasingly understood as a disease of failing cellular power plants as much as toxic protein buildup, and this is one of the first human trials to test whether simply refueling those cells helps.

Human neurons required dramatically more complexity to imitate than rat neurons did, evidence that a single human brain cell is doing meaningfully more information processing on its own, not just participating in a bigger network of otherwise-ordinary cells.

Three hundred miles away in drought-prone Marathwada, Parmeshwar Poul, who grew up carrying heavy brass pots home from his village well as a child, returned from a comfortable GIS career in Pune to map rooftops, rainfall, and groundwater for over a thousand villages. One idea he introduced, a "Water Budget" that gets villages to count liters the way they count rupees, has become a daily habit in places like Sheboli and Padi [198]. Desilting seven lakes across two districts alone freed up roughly 334 million liters of new storage.

The accounts were remarkably consistent. About one in five people did change some detail over time, but the researchers found no evidence this reflected lying, just ordinary quirks of memory or how safe someone felt disclosing something painful in a given setting.